deuxhero
2013-08-08, 12:08 AM
First guide. A quick list of everything that lets you cast spells from another class's list.
This list will not cover Bloodlines/Domains/Patrons/whatever, because they are a core part of the class and require no system mastery to know about, same with archetypes that just replace some of the spells from these (if there is ever a way to get an EXTRA one of these, or get one from another class though, I’ll add it as well as any "power" these give that allows for off-list spells).
Note: FAQ says that adding spells known without also adding them to your class list (unless it's a class feature) does nothing and targeted Improved Eldritch Heritage. Only other thing hit by this is Cracked Orange Prisim and only for spontaneous casters.
ITEMS
Cracked Orange Prism
Cost: 1000 GP
Spells given: Any level-0 spell
Usable by: Any (Prepared casters get it prepared for free) Any prepared (The FAQ says nothing about spells prepared)
Source: Seeker of Secrets
Notes: A Wayfinder (500 GP, also from SoS) lets you keep it in your pocket and not orbiting your head saying “sunder me”, and the implantation rules (also SoS I think) let you implant it in your body (but it takes charisma for you and someone with heal and know arcana) and not orbiting your head saying "sunder me".
Ring of Spell Knowledge
Cost: 1,500 gp (Type I), 6,000 gp (Type II), 13,500 gp (Type III), 24,000 gp (Type IV)
Spells given: Any (spells not on your list are considered one level higher)
Usable by: Arcane Spontaneous
Source: Ultimate Equipment
Notes: Requires DC20 spellcraft to make the ring "learn" a spell, and you can replace the spell with another spell. Text is unclear if someone else can do this check for you.
Runes of The Crone's Coven/Runes of the Old Faith
Cost: 16,000 gp
Spell given: Any Witch or Druid spell (respectively), considered one level higher with double casting time
Usable by: Skald
Source: Advanced Class Guide
Notes: 1/day and based on Spell Kenning
Traits
Two-World Magic
Requirements: Possible fluff
Spells given: Any level-0 spell
Usable by: Any
Source: Sargava, the Lost Colony
Notes: Can be used to qualify for Arcane Trickster
Feats
Improved Eldritch Heritage (Arcane)
Requirements: Skill Focus (Any Knowledge), Eldritch Heritage (Arcane), Charisma 15, level 11
Spells Given: Any Wizard/Sorcerer of a level up to the highest spell level you are capable of casting at level 11, 15 and 19.
Usable by: Any spontaneous (Sorcerer doesn’t gain foreign spells)
Source: Ultimate Magic (Arcane Bloodline is core rulebook)
Notes: You can get higher level spells by taking this feat at a higher level while still getting all 3 bonus spells (the mechanics are hard to explain, but it’s easy to understand if you look at the text). Unlike most items on this list, this one was NOT intentional (but Arcane is the "default" bloodline, so there’s no excuse for missing it when testing Eldritch Heritage). This has been killed in an FAQ
Unsanctioned Knowledge
Requirements: Int 13, able to cast first level Paladin spells
Spells given: 1 spell of each level from the Bard, Cleric, Inquisitor or Oracle (While only 4 unique spells and only 2 you can use without an Oracle dip, the 2 you do get aren't bad choices) list.
Usable by: Paladin
Source: Ultimate Magic
Sahir-Afiyun
Requirements: 2nd level spells, Spell Focus: Enchantment OR Necromancy, drug user
Spells given: Various, including a bunch of unique ones
Usable by: All (Fluff can be a pain for Paladins)
Source: Dark Markets, A Guide to Katapesh
Notes: Some of the "normal" spells added have an extra 15GP material component. 3.5 Paizo material. Only adds them to your list, getting them in your spell book/known is your responsibility.
Shade of the Uskwood
Requirements: Neutral evil, patron: Zon-Kuthon (oddly doesn't require being a druid)
Spells given: Lots from every spell level, mostly [cold] or Necromancy themed.
Usable by: Druid
Source: The Inner Sea World Guide
Notes: Removes [fire] spells from ALL lists and blocks wildshaping into [fire] creatures. Benefits are lost if a special unholy symbol is destroyed, but doesn't need to be used so just bury it somewhere.
Dreamed Secrets
Requirements: : Ability to cast divine spells, caster level 7th, worshiper of a Great Old One or Outer God.
Spells given: Any 2 wizard spells under the max level you can cast (!)
Usable by: Any divine caster
Source: Inner Sea Gods
Notes: Need to pass a DC20 will save or take 1d2 wisdom damage and stopped from casting, though keeping the spell. Even if you ARE evil, the worship requirement may be hazardous to your health.
Class Features
Arcane Archivist
Class: Oracle (Lore Mystery, Revelation)
Spells given: Any Wizard/Sorcerer spell (uses slot one level higher)
Source: Advanced Player’s Guide
Notes: Requires the spell be in a spellbook AND it erases it when you’ve used it. Terrible even with a Blessed Book to remove the wealth burn. Avoid it.
Greater Spell Access
Class: Magus
Spells given: 2 Wizard spells of each level
Spell Blending
Class: Magus (Arcana)
Spells given: 1 Wizard/Sorc spell, or 2 wizard/sorc spell if less than your highest level spell
Source: Ultimate Magic
Notes: can be taken multiple times.
Arcane Enlightenment
Class: Shaman (Lore spirit) Oracle (Spirit Guide archetype only)
Spells given: 1 Wizard/Sorc spell per charisma (even though Shaman is a wisdom based class...) bonus
Source: Advanced Class Guide
Notes: Requires a minimum intelligence modifier of 10+spell level to cast. Oracle with Spirit Guide actually "takes" this hex daily and can change her added spells each time, but it might not do anything as it says "list of shaman spells she can prepare" which Spirit Guide doesn't fully overwrite.
Prestige Classes
Pathfinder Savant
Requirements: Magical Aptitude, any one item creation feat, Knowledge (arcana) 5 ranks, Spellcraft 5 ranks, Use Magic Device 5 ranks and the ability to cast 2nd level spells.
Casting Progression: All but 1st level
Spells given: Any (foreign spells are considered one level higher) at each Prc level beyond the first
Usable by: Any (see notes)
Source: Seeker of Secrets
Notes: The ruling that Wizards and other spellbook casters don’t add new spells to their spell book when advancing in prestige classes makes it almost impossible to get any divine only spells as spells known for a spellbook caster short of taking more levels in the base class.
Magaambyan Arcanist
Requirements: Any good alignment, Scholar, Spell Mastery, Spellcraft 5 ranks, Knowledge (Arcana) 5 ranks, Knowledge (Nature) 5 ranks, ability to prepare third level spells.
Casting Progression: 10/10 (Starting at second level, [evil] spells require two slots to prepare)
Spells given: Any Druid spell 2 levels below your highest level spell at each level (uses normal slot). At 9th level, all Good Domain spells are given.
Usable by: Arcane prepared*
Source: Paths of Prestige
Notes: Unlike the above, this adds the new spells to your spellbook automaticly. Until Spell Mastery is fixed, you need to dip in Wizard to qualify for it and this class by RAW, despite it making provisions for Witches who entered the class. If you can convince the GM to allow a subdomain, the 9th level ability vastly improves.
Agent of the Grave
Requirements: Any Evil, Knowlege (Arcana) and Knowledge (Religion) 5 ranks, cast Animate Dead, fluff.
Casting Progression: 4/5 (lose first)
Spells Given: Number of necromancy spells of any level (even ones you can't cast yet) equal to intelligence modifier at level 5
Usable by: Any capable of casting Animate Dead.
Source: Carrion Crown (Broken Moon)
Note: Like Pathfinder Savant, spellbook casters need to take levels in their base class to get the new spells. Luckily this ability comes at the last level of the prestige class.
Veiled Illusionist
Requirements: Spell Focus (Illusion), Bluff and Disguise 5 ranks, Knowledge (Arcana) 2 ranks. Able to cast 3 illusion spells, one of which must be at least second level.
Casting Progression: 10/10
Spells Given: Illusion spell from Sorc/Wizard list at every class level.
Usable by: Any (though pointless for Sorc/Wizard)
Source: Paths of Prestige
Harrower
Requirements: Non-true neutral alignment, Knowledge (Arcana or Religon) 5 ranks, Preform 5 ranks, Third Level spells, own a particular 100 GP mundane item.
Casting Progresssion: 10/10
Spells given: Harrowing (just the one)
Source: The Inner Sea World Guide
Natural Alchemist
Requirements: Brew Potion, 5 ranks each in Craft Alchemy, know: nature, profession herbalist and spellcraft and 2nd level arcane spells
Casting Progression: 10/10
Spells Given: Cure Light Wounds, Cure Moderate Wounds, Cure Serious Wounds, Cure Critical Wounds and Breath of Life. These can only be cast spontaneously by using 2 slots as a full round action.
Usable by: Any Arcane
Source: People of the Sands
Soul Warden
Requirements: Any non-evil, Knowledge: Religion 5 ranks, can cast command undead OR consecrate
Casting Progression: 10/10
Spells Given: Bunch, mostly anti-undead stuff but some nice gems that don't need to be used against them.
Usable by: Any (Non Sorc/Wiz, Cleric, or Inqusitor needs something else from the guide
Source: Undead Slayers Handbook
Notes: Requires expending from a 3+charisma/day pool to cast these spontaneously till 1 level after you can access each new spell
Exalted
Requirements: Deific Obedience, Skill Focus (Knowledge [religion]), Diplomacy 5 ranks, Knowledge (religion) 5 ranks, third level divine spells, must worship only patron and alignment must be same as patron deities
Casting Progression: 10/10 (no domain progression)
Spells Given: Any domain your god gives
Usable by: Any Divine (inquisitor might not work)
Source: Inner Sea Gods
Notes: Only way to get extra domains in PF (outside of Hellknight and Razmiran Priest, which explicitly doesn't give spells), can get domains as a class that doesn't normally have them.
Daivrat
Requirements: Knowledge (arcana) 7 ranks, Knowledge (planes) 7 ranks, Spellcraft 5 ranks, Spell Focus (conjuration), know an elemental language, non-evil.
Casting Progression: 9/10 (lose 1st)
Spells given: Any, chosen daily (on-list spells count as 1 level higher, off list spells count as 2 levels higher), once at spell/slot preperation, limited spell levels by class level
Usable by: Any Arcane (Divine qualifies, but can't be progressed)
Source: Qadira, Gateway to the East
Razmirian Preist
Requirements: Non-good, Bluff 5 ranks, Use Magic Device 5 ranks. False Casting (which needs Magical Aptitude, Bluff 1 rank and Sleight of Hand 1 rank.), 3rd level Arcane casting and genuine faith in an evil crazy guy's divinity
Casting Progression: 7/10 (1, 5, 9 lost)
Spells given: 1:Cure Light Wounds, Bless (as 2nd level) 5: Cure Moderate Wounds, Spiritual Weapon (as 3rd) 9: Cure Serious Wounds, Prayer (as 4th)
Usable by: Any Arcane (prepared needs levels in the base class to learn the new spells)
Notes: Cure spells are only 10 mins of temporary HP.
Dawnflower Dissident
Requirements: Worship Sarenrae, Dervish Dance, Weapon Finesse, Bluff 5 ranks, Disguise 5 ranks, Knowledge (religion) 5 ranks, Sleight of Hand 5 ranks, able to cast Daylight as a divine spell
Casting Progression: 10/10 any
Spells given: illusion of calm (1st), rope trick (2nd), nondetection (3rd), detect scrying (4th), mage’s private sanctum (5th), veil (6th), mage’s magnificent mansion (7th), screen (8th), and communal mind blank (9th), all added at the first level in the class.
Usable by: Any (if you can figure out how to cast a third level divine spell as an arcane caster, the progression is type agnostic)
Notes: Double duration if used on Sarenrae worshipers. Has the old "worship" instead of "patron" problem there and requirements.
Archetypes
Magician
Class: Bard
Spells Given: Any Arcane spell of a level he can cast at 2nd level and every four levels after that
Watersinger
Class: Bard
Spells Given: create water, hydraulic push, slipstream, aqueous orb, hydraulic torrent, water walk, fluid form, ride the waves, control water, communal water walk, vortex, seamantle. Most at a reduced level.
Source: Advanced Race Guide
Notes: Undine only, Once again, races that count as human can enter via Racial Heritage.
Dirge Bard
Class: Bard
Spells Given: Any arcane necromancy at 2nd level and every four levels thereafter.
Source: Ultimate Magic
Notes: Can give spells known for levels you can't cast yet.
Ancient Lorekeeper
Class: Oracle
Spells Given: Any Wizard spell under the max level you can cast (replaces Mystery bonus spells)
Source: Advanced Race Guide
Notes: Elf only. Can be entered by Half-Elfs or Humans/Half-Orcs/Scion of Humanity Aasimar with the Racial Heritage feat
Various
Class: Alchemist
Spells Given: Various
Notes: About one third to one half of the Alchemist archetypes give you some unique formulas (which aren’t technically spells, but are close enough for this guide). Too many to list on their own.
Oath archetypes
Class: Paladin
Spells given: Various
Source: Ultimate Magic
Notes: All the Oath of X archetypes add spells to your list. Too many to list on their own.
Sacred Servant
Class: Paladin
Spell given: 1st-4th level spells from a domain given by your deity
Source: Advanced Player's Guide
Notes: Domain slots, so one/day without shenanigans. If you can somehow get beyond 4th level "Paladin spells" you would gain a domain slot/spell for that level. This archetype is REALLY good.
Wild Caller
Class: Summoner
Spells Given: Summon Nature’s Ally Line (loss Summon Monster)
Source: Advanced Race Guide
Notes: Half-Elf only. As with Ancient Lorekeeper, Racial Heritage opens it to any race that counts as human.
First Worlder
Class: Summoner
Spells Given: Summon Nature's Ally line
Source: Inner Sea Magic
Notes: Unless you are using your Eidolon as a skill bot, avoid this at all costs.
Irmathi Irregular (d20pfsrd name: Woodland Skirmisher)
Class: Ranger
Spells given: 1 druid spell/day (you can prepare it multiple times)
Source: Inner Sea Magic
Various
Class: Druid
Spells Given: Various
Notes: Lots of druid archetypes "trade" nature's bond for non-standard domains which can give lots of new spell options. Too many to list on their own.
Hexcrafter
Class: Magus
Spells Given: All [curse] spells
Source: Ultimate Magic
Notes: Most of these are on multiple lists and the archetype doesn't say which spell level you get these (in-fact it doesn't say when you get any of the spells it gives) at. [curse] was retroactively added to a bunch of spells, so check carefully.
Corpse Hunter
Class: Ranger
Spells Given: 1st—bless water, detect undead, hide from undead, sanctify corpse, 2nd— halt undead, 3rd—speak with dead, 4th—searing light.
Source: Undead Slayer's Handbook
Spirit Guide
Class: Oracle
Spells Given: Shaman spirit bonus spells, changed daily.
Source: Advanced Class Guide
Goliath Druid
Class: Druid
Spells Given: Enlarge Person (Self or animal companion only. Other spells can be converted to it spontaneously)
Source: Giant Hunter's Handbook
Alternate Racial Traits
Mystic Past Life
Race: Samsarans
Source: Advanced Race Guide
Spells Given: 1+your key ability score bonus spells from a class list of the same type (Arcane/Divine) to the spellcasting class you take at level 1.
Notes: One of the few, if not the only thing, based on your ability score modifier that is non-retroactive in PF.
Spells
Shadow X/Shades line
Shadow Conjuration and Shadow Evocation let you duplicate spells from the Sorcerer/Wizard list, which is great for any Bard, Darkness domain cleric, Shadow Witch or anyone who got these spells from something else in this guide (Shadow Conjuration is a great choice for anything in this guide that allows you to take). Unlike 3.5, Shades no longer require the spell mimicked be on the Sorcerer/Wizard list nor even arcane and is useful even to them.
Wish Line/Miracle
Can duplicate lower leveled spells from other lists. Generally not the best use of these spells
Mythic
Arcane/Divine Knowledge
Add 3 level 1 spells Arcane/Divine spells from the Wizard/Sorcerer or Bard/Cleric or Druid list and you can take it a second time to level 2 spells and and third to get level 3 ones. Requires Mythic 6. Why Paizo thought this was worth printing when you can only get it when there are abilities that turn you into a literal god and give you SLAs of multiple levels, give you a major artifact, remove all negatives of the oracle curse, false focus on steroids, free metamagic, the ability to deny pretty much anything as an immediate action and more at the same or lower level. I'd question taking this even if the tier requirement was errataed. Oh and for some reason only specific classes can take it.
Misc
Deity
Source: Inner Sea Gods, various Adventure Paths
Most of the bigger deities have a handful of "bonus" spells open to their worshipers. While most of these are for divine casters, a handful grant special spells for arcane casters
Totem Guide animal companion archetype
Source: Animal Archive
Spells given: detect animals or plants (1st), augury (2nd), helping hand (3rd), divination (4th), commune with nature (5th), and find the path (6th).
Usable by: Any (see below)
Level: Effective druid level 3
Notes: Spontaneous only. Any class can get an Animal Companion (with this archetype) at character level - 3 through the Animal Ally feat, which requires just level 4 and the +2/+2 feat "Nature Soul" which has no requirements.
Spell Research
Source: Ultimate Campaign
Spells given: Any (?)
Usable by: Any (?)
Notes: Part of a variant rule system, but the only part that actually needs that variant system is an optional method for making it easier by using variant specific resources.
Honorable Mention
Razmiran Priest
This archetype gives you the ability to expend spell slots one level higher to avoid blowing charges on a magic item. While you don't actually "cast" the spell in question, it gives you access to ANY divine spell you want and can be further augmented by a handful of abilities that let you use your own CL and stats for magic items, essentially the 3.5 archivist except spontaneous. It's ridiculously good
Source: Inner Sea Magic
Paragon Surge
This half-elf only spell from ARG can be used by an Oracle with Eldritch Heritage (arcane) and allow you to gain Improved Eldritch Heritage temporarily, selecting any Sorcerer spells you want to know at the moment (as well as Expanded Arcana for spells from your own list) and cast them the next round. Half Elfs even get the requirement feat for EH for free! killed by FAQ
Spell-Capturing Gem
This 5000 GP one use item from Magical Marketplace "steals" spells its owner counterspells and lets you use them latter. This spell is explicitly cast by you, not the original caster, (although at minimum CL) which can make it useful for any spell you'll want to cast once and don't want to spend permanent resources on. Note: Unless you can find a metamagic to apply to it the obvious use, permanency, is stuck at CL9.
Icon of Aspects
From Tears at Bitter Manor this 5,500 GP item lets a cleric change her swap domain powers to a domain she doesn't have while keeping her bonus spells. At higher levels you can essentially combine a domain with good powers and a domain with good spells.
This list will not cover Bloodlines/Domains/Patrons/whatever, because they are a core part of the class and require no system mastery to know about, same with archetypes that just replace some of the spells from these (if there is ever a way to get an EXTRA one of these, or get one from another class though, I’ll add it as well as any "power" these give that allows for off-list spells).
Note: FAQ says that adding spells known without also adding them to your class list (unless it's a class feature) does nothing and targeted Improved Eldritch Heritage. Only other thing hit by this is Cracked Orange Prisim and only for spontaneous casters.
ITEMS
Cracked Orange Prism
Cost: 1000 GP
Spells given: Any level-0 spell
Usable by: Any (Prepared casters get it prepared for free) Any prepared (The FAQ says nothing about spells prepared)
Source: Seeker of Secrets
Notes: A Wayfinder (500 GP, also from SoS) lets you keep it in your pocket and not orbiting your head saying “sunder me”, and the implantation rules (also SoS I think) let you implant it in your body (but it takes charisma for you and someone with heal and know arcana) and not orbiting your head saying "sunder me".
Ring of Spell Knowledge
Cost: 1,500 gp (Type I), 6,000 gp (Type II), 13,500 gp (Type III), 24,000 gp (Type IV)
Spells given: Any (spells not on your list are considered one level higher)
Usable by: Arcane Spontaneous
Source: Ultimate Equipment
Notes: Requires DC20 spellcraft to make the ring "learn" a spell, and you can replace the spell with another spell. Text is unclear if someone else can do this check for you.
Runes of The Crone's Coven/Runes of the Old Faith
Cost: 16,000 gp
Spell given: Any Witch or Druid spell (respectively), considered one level higher with double casting time
Usable by: Skald
Source: Advanced Class Guide
Notes: 1/day and based on Spell Kenning
Traits
Two-World Magic
Requirements: Possible fluff
Spells given: Any level-0 spell
Usable by: Any
Source: Sargava, the Lost Colony
Notes: Can be used to qualify for Arcane Trickster
Feats
Improved Eldritch Heritage (Arcane)
Requirements: Skill Focus (Any Knowledge), Eldritch Heritage (Arcane), Charisma 15, level 11
Spells Given: Any Wizard/Sorcerer of a level up to the highest spell level you are capable of casting at level 11, 15 and 19.
Usable by: Any spontaneous (Sorcerer doesn’t gain foreign spells)
Source: Ultimate Magic (Arcane Bloodline is core rulebook)
Notes: You can get higher level spells by taking this feat at a higher level while still getting all 3 bonus spells (the mechanics are hard to explain, but it’s easy to understand if you look at the text). Unlike most items on this list, this one was NOT intentional (but Arcane is the "default" bloodline, so there’s no excuse for missing it when testing Eldritch Heritage). This has been killed in an FAQ
Unsanctioned Knowledge
Requirements: Int 13, able to cast first level Paladin spells
Spells given: 1 spell of each level from the Bard, Cleric, Inquisitor or Oracle (While only 4 unique spells and only 2 you can use without an Oracle dip, the 2 you do get aren't bad choices) list.
Usable by: Paladin
Source: Ultimate Magic
Sahir-Afiyun
Requirements: 2nd level spells, Spell Focus: Enchantment OR Necromancy, drug user
Spells given: Various, including a bunch of unique ones
Usable by: All (Fluff can be a pain for Paladins)
Source: Dark Markets, A Guide to Katapesh
Notes: Some of the "normal" spells added have an extra 15GP material component. 3.5 Paizo material. Only adds them to your list, getting them in your spell book/known is your responsibility.
Shade of the Uskwood
Requirements: Neutral evil, patron: Zon-Kuthon (oddly doesn't require being a druid)
Spells given: Lots from every spell level, mostly [cold] or Necromancy themed.
Usable by: Druid
Source: The Inner Sea World Guide
Notes: Removes [fire] spells from ALL lists and blocks wildshaping into [fire] creatures. Benefits are lost if a special unholy symbol is destroyed, but doesn't need to be used so just bury it somewhere.
Dreamed Secrets
Requirements: : Ability to cast divine spells, caster level 7th, worshiper of a Great Old One or Outer God.
Spells given: Any 2 wizard spells under the max level you can cast (!)
Usable by: Any divine caster
Source: Inner Sea Gods
Notes: Need to pass a DC20 will save or take 1d2 wisdom damage and stopped from casting, though keeping the spell. Even if you ARE evil, the worship requirement may be hazardous to your health.
Class Features
Arcane Archivist
Class: Oracle (Lore Mystery, Revelation)
Spells given: Any Wizard/Sorcerer spell (uses slot one level higher)
Source: Advanced Player’s Guide
Notes: Requires the spell be in a spellbook AND it erases it when you’ve used it. Terrible even with a Blessed Book to remove the wealth burn. Avoid it.
Greater Spell Access
Class: Magus
Spells given: 2 Wizard spells of each level
Spell Blending
Class: Magus (Arcana)
Spells given: 1 Wizard/Sorc spell, or 2 wizard/sorc spell if less than your highest level spell
Source: Ultimate Magic
Notes: can be taken multiple times.
Arcane Enlightenment
Class: Shaman (Lore spirit) Oracle (Spirit Guide archetype only)
Spells given: 1 Wizard/Sorc spell per charisma (even though Shaman is a wisdom based class...) bonus
Source: Advanced Class Guide
Notes: Requires a minimum intelligence modifier of 10+spell level to cast. Oracle with Spirit Guide actually "takes" this hex daily and can change her added spells each time, but it might not do anything as it says "list of shaman spells she can prepare" which Spirit Guide doesn't fully overwrite.
Prestige Classes
Pathfinder Savant
Requirements: Magical Aptitude, any one item creation feat, Knowledge (arcana) 5 ranks, Spellcraft 5 ranks, Use Magic Device 5 ranks and the ability to cast 2nd level spells.
Casting Progression: All but 1st level
Spells given: Any (foreign spells are considered one level higher) at each Prc level beyond the first
Usable by: Any (see notes)
Source: Seeker of Secrets
Notes: The ruling that Wizards and other spellbook casters don’t add new spells to their spell book when advancing in prestige classes makes it almost impossible to get any divine only spells as spells known for a spellbook caster short of taking more levels in the base class.
Magaambyan Arcanist
Requirements: Any good alignment, Scholar, Spell Mastery, Spellcraft 5 ranks, Knowledge (Arcana) 5 ranks, Knowledge (Nature) 5 ranks, ability to prepare third level spells.
Casting Progression: 10/10 (Starting at second level, [evil] spells require two slots to prepare)
Spells given: Any Druid spell 2 levels below your highest level spell at each level (uses normal slot). At 9th level, all Good Domain spells are given.
Usable by: Arcane prepared*
Source: Paths of Prestige
Notes: Unlike the above, this adds the new spells to your spellbook automaticly. Until Spell Mastery is fixed, you need to dip in Wizard to qualify for it and this class by RAW, despite it making provisions for Witches who entered the class. If you can convince the GM to allow a subdomain, the 9th level ability vastly improves.
Agent of the Grave
Requirements: Any Evil, Knowlege (Arcana) and Knowledge (Religion) 5 ranks, cast Animate Dead, fluff.
Casting Progression: 4/5 (lose first)
Spells Given: Number of necromancy spells of any level (even ones you can't cast yet) equal to intelligence modifier at level 5
Usable by: Any capable of casting Animate Dead.
Source: Carrion Crown (Broken Moon)
Note: Like Pathfinder Savant, spellbook casters need to take levels in their base class to get the new spells. Luckily this ability comes at the last level of the prestige class.
Veiled Illusionist
Requirements: Spell Focus (Illusion), Bluff and Disguise 5 ranks, Knowledge (Arcana) 2 ranks. Able to cast 3 illusion spells, one of which must be at least second level.
Casting Progression: 10/10
Spells Given: Illusion spell from Sorc/Wizard list at every class level.
Usable by: Any (though pointless for Sorc/Wizard)
Source: Paths of Prestige
Harrower
Requirements: Non-true neutral alignment, Knowledge (Arcana or Religon) 5 ranks, Preform 5 ranks, Third Level spells, own a particular 100 GP mundane item.
Casting Progresssion: 10/10
Spells given: Harrowing (just the one)
Source: The Inner Sea World Guide
Natural Alchemist
Requirements: Brew Potion, 5 ranks each in Craft Alchemy, know: nature, profession herbalist and spellcraft and 2nd level arcane spells
Casting Progression: 10/10
Spells Given: Cure Light Wounds, Cure Moderate Wounds, Cure Serious Wounds, Cure Critical Wounds and Breath of Life. These can only be cast spontaneously by using 2 slots as a full round action.
Usable by: Any Arcane
Source: People of the Sands
Soul Warden
Requirements: Any non-evil, Knowledge: Religion 5 ranks, can cast command undead OR consecrate
Casting Progression: 10/10
Spells Given: Bunch, mostly anti-undead stuff but some nice gems that don't need to be used against them.
Usable by: Any (Non Sorc/Wiz, Cleric, or Inqusitor needs something else from the guide
Source: Undead Slayers Handbook
Notes: Requires expending from a 3+charisma/day pool to cast these spontaneously till 1 level after you can access each new spell
Exalted
Requirements: Deific Obedience, Skill Focus (Knowledge [religion]), Diplomacy 5 ranks, Knowledge (religion) 5 ranks, third level divine spells, must worship only patron and alignment must be same as patron deities
Casting Progression: 10/10 (no domain progression)
Spells Given: Any domain your god gives
Usable by: Any Divine (inquisitor might not work)
Source: Inner Sea Gods
Notes: Only way to get extra domains in PF (outside of Hellknight and Razmiran Priest, which explicitly doesn't give spells), can get domains as a class that doesn't normally have them.
Daivrat
Requirements: Knowledge (arcana) 7 ranks, Knowledge (planes) 7 ranks, Spellcraft 5 ranks, Spell Focus (conjuration), know an elemental language, non-evil.
Casting Progression: 9/10 (lose 1st)
Spells given: Any, chosen daily (on-list spells count as 1 level higher, off list spells count as 2 levels higher), once at spell/slot preperation, limited spell levels by class level
Usable by: Any Arcane (Divine qualifies, but can't be progressed)
Source: Qadira, Gateway to the East
Razmirian Preist
Requirements: Non-good, Bluff 5 ranks, Use Magic Device 5 ranks. False Casting (which needs Magical Aptitude, Bluff 1 rank and Sleight of Hand 1 rank.), 3rd level Arcane casting and genuine faith in an evil crazy guy's divinity
Casting Progression: 7/10 (1, 5, 9 lost)
Spells given: 1:Cure Light Wounds, Bless (as 2nd level) 5: Cure Moderate Wounds, Spiritual Weapon (as 3rd) 9: Cure Serious Wounds, Prayer (as 4th)
Usable by: Any Arcane (prepared needs levels in the base class to learn the new spells)
Notes: Cure spells are only 10 mins of temporary HP.
Dawnflower Dissident
Requirements: Worship Sarenrae, Dervish Dance, Weapon Finesse, Bluff 5 ranks, Disguise 5 ranks, Knowledge (religion) 5 ranks, Sleight of Hand 5 ranks, able to cast Daylight as a divine spell
Casting Progression: 10/10 any
Spells given: illusion of calm (1st), rope trick (2nd), nondetection (3rd), detect scrying (4th), mage’s private sanctum (5th), veil (6th), mage’s magnificent mansion (7th), screen (8th), and communal mind blank (9th), all added at the first level in the class.
Usable by: Any (if you can figure out how to cast a third level divine spell as an arcane caster, the progression is type agnostic)
Notes: Double duration if used on Sarenrae worshipers. Has the old "worship" instead of "patron" problem there and requirements.
Archetypes
Magician
Class: Bard
Spells Given: Any Arcane spell of a level he can cast at 2nd level and every four levels after that
Watersinger
Class: Bard
Spells Given: create water, hydraulic push, slipstream, aqueous orb, hydraulic torrent, water walk, fluid form, ride the waves, control water, communal water walk, vortex, seamantle. Most at a reduced level.
Source: Advanced Race Guide
Notes: Undine only, Once again, races that count as human can enter via Racial Heritage.
Dirge Bard
Class: Bard
Spells Given: Any arcane necromancy at 2nd level and every four levels thereafter.
Source: Ultimate Magic
Notes: Can give spells known for levels you can't cast yet.
Ancient Lorekeeper
Class: Oracle
Spells Given: Any Wizard spell under the max level you can cast (replaces Mystery bonus spells)
Source: Advanced Race Guide
Notes: Elf only. Can be entered by Half-Elfs or Humans/Half-Orcs/Scion of Humanity Aasimar with the Racial Heritage feat
Various
Class: Alchemist
Spells Given: Various
Notes: About one third to one half of the Alchemist archetypes give you some unique formulas (which aren’t technically spells, but are close enough for this guide). Too many to list on their own.
Oath archetypes
Class: Paladin
Spells given: Various
Source: Ultimate Magic
Notes: All the Oath of X archetypes add spells to your list. Too many to list on their own.
Sacred Servant
Class: Paladin
Spell given: 1st-4th level spells from a domain given by your deity
Source: Advanced Player's Guide
Notes: Domain slots, so one/day without shenanigans. If you can somehow get beyond 4th level "Paladin spells" you would gain a domain slot/spell for that level. This archetype is REALLY good.
Wild Caller
Class: Summoner
Spells Given: Summon Nature’s Ally Line (loss Summon Monster)
Source: Advanced Race Guide
Notes: Half-Elf only. As with Ancient Lorekeeper, Racial Heritage opens it to any race that counts as human.
First Worlder
Class: Summoner
Spells Given: Summon Nature's Ally line
Source: Inner Sea Magic
Notes: Unless you are using your Eidolon as a skill bot, avoid this at all costs.
Irmathi Irregular (d20pfsrd name: Woodland Skirmisher)
Class: Ranger
Spells given: 1 druid spell/day (you can prepare it multiple times)
Source: Inner Sea Magic
Various
Class: Druid
Spells Given: Various
Notes: Lots of druid archetypes "trade" nature's bond for non-standard domains which can give lots of new spell options. Too many to list on their own.
Hexcrafter
Class: Magus
Spells Given: All [curse] spells
Source: Ultimate Magic
Notes: Most of these are on multiple lists and the archetype doesn't say which spell level you get these (in-fact it doesn't say when you get any of the spells it gives) at. [curse] was retroactively added to a bunch of spells, so check carefully.
Corpse Hunter
Class: Ranger
Spells Given: 1st—bless water, detect undead, hide from undead, sanctify corpse, 2nd— halt undead, 3rd—speak with dead, 4th—searing light.
Source: Undead Slayer's Handbook
Spirit Guide
Class: Oracle
Spells Given: Shaman spirit bonus spells, changed daily.
Source: Advanced Class Guide
Goliath Druid
Class: Druid
Spells Given: Enlarge Person (Self or animal companion only. Other spells can be converted to it spontaneously)
Source: Giant Hunter's Handbook
Alternate Racial Traits
Mystic Past Life
Race: Samsarans
Source: Advanced Race Guide
Spells Given: 1+your key ability score bonus spells from a class list of the same type (Arcane/Divine) to the spellcasting class you take at level 1.
Notes: One of the few, if not the only thing, based on your ability score modifier that is non-retroactive in PF.
Spells
Shadow X/Shades line
Shadow Conjuration and Shadow Evocation let you duplicate spells from the Sorcerer/Wizard list, which is great for any Bard, Darkness domain cleric, Shadow Witch or anyone who got these spells from something else in this guide (Shadow Conjuration is a great choice for anything in this guide that allows you to take). Unlike 3.5, Shades no longer require the spell mimicked be on the Sorcerer/Wizard list nor even arcane and is useful even to them.
Wish Line/Miracle
Can duplicate lower leveled spells from other lists. Generally not the best use of these spells
Mythic
Arcane/Divine Knowledge
Add 3 level 1 spells Arcane/Divine spells from the Wizard/Sorcerer or Bard/Cleric or Druid list and you can take it a second time to level 2 spells and and third to get level 3 ones. Requires Mythic 6. Why Paizo thought this was worth printing when you can only get it when there are abilities that turn you into a literal god and give you SLAs of multiple levels, give you a major artifact, remove all negatives of the oracle curse, false focus on steroids, free metamagic, the ability to deny pretty much anything as an immediate action and more at the same or lower level. I'd question taking this even if the tier requirement was errataed. Oh and for some reason only specific classes can take it.
Misc
Deity
Source: Inner Sea Gods, various Adventure Paths
Most of the bigger deities have a handful of "bonus" spells open to their worshipers. While most of these are for divine casters, a handful grant special spells for arcane casters
Totem Guide animal companion archetype
Source: Animal Archive
Spells given: detect animals or plants (1st), augury (2nd), helping hand (3rd), divination (4th), commune with nature (5th), and find the path (6th).
Usable by: Any (see below)
Level: Effective druid level 3
Notes: Spontaneous only. Any class can get an Animal Companion (with this archetype) at character level - 3 through the Animal Ally feat, which requires just level 4 and the +2/+2 feat "Nature Soul" which has no requirements.
Spell Research
Source: Ultimate Campaign
Spells given: Any (?)
Usable by: Any (?)
Notes: Part of a variant rule system, but the only part that actually needs that variant system is an optional method for making it easier by using variant specific resources.
Honorable Mention
Razmiran Priest
This archetype gives you the ability to expend spell slots one level higher to avoid blowing charges on a magic item. While you don't actually "cast" the spell in question, it gives you access to ANY divine spell you want and can be further augmented by a handful of abilities that let you use your own CL and stats for magic items, essentially the 3.5 archivist except spontaneous. It's ridiculously good
Source: Inner Sea Magic
Paragon Surge
This half-elf only spell from ARG can be used by an Oracle with Eldritch Heritage (arcane) and allow you to gain Improved Eldritch Heritage temporarily, selecting any Sorcerer spells you want to know at the moment (as well as Expanded Arcana for spells from your own list) and cast them the next round. Half Elfs even get the requirement feat for EH for free! killed by FAQ
Spell-Capturing Gem
This 5000 GP one use item from Magical Marketplace "steals" spells its owner counterspells and lets you use them latter. This spell is explicitly cast by you, not the original caster, (although at minimum CL) which can make it useful for any spell you'll want to cast once and don't want to spend permanent resources on. Note: Unless you can find a metamagic to apply to it the obvious use, permanency, is stuck at CL9.
Icon of Aspects
From Tears at Bitter Manor this 5,500 GP item lets a cleric change her swap domain powers to a domain she doesn't have while keeping her bonus spells. At higher levels you can essentially combine a domain with good powers and a domain with good spells.