Wu Jen has the Fiery Eyes spell, which ignites combustible materials within "one spot". (Wasn't there a Wu Jen Candle Castee thread just recently?)
Here's a way to TO a candle caster. Granted, SCM and Incantatrix also does a lot of lifting, but a pure Candle Caster is still scary with Fiery Eyes.
Minister Chandler
Whisper Gnome, Wu Jen 5 / Candle Caster 2 / Shadowcraft Mage 3 / Candle Caster +5 / Shadowcraft Mage +2 / Candle Caster+3
Bring forth shadows using candles. Pretty darn simple, isn't it?
Feats
1 Heighten (B), Great Fortitude, Earth Sense, Earth Spell
3 Spell Focus (Illusion)
6 Spell Rehearsal
9 Residual Magic
12 Sanctum Spell
15 Echoing Spell
18 Repeat Spell
Magical Locations Chaos-Shuffle (Optional): Arcane Thesis (Silent Image), Proteus
Background:
1. A candle caster can store a spell in a candle, similarly crafted like, and functioning as, a spell in a (spell-)scroll. A candle is activated by lighting it, which is then assumed to be best done by taking a standard action to use tindertwig. Of course, some optimizers don't eat that crap suggestion up. Also, the spell effect is delayed by 1 round until Candle Caster 7.
2. Drawing material components (like a candle, for Summon Monster spells) and dropping items to an adjacent square are both free actions. One of the assumptions here is that either you don't need to cast the spell you are drawing components for, or that you will cast the Summon Monster spell much later. Another assumption is that your Craft(Candlemaking) skill enables you to craft miniscule candles that always lands upright (*blah* center of gravity *blah*).
You are a Wu Jen with possible higher spell save DCs. You also have a massive stock of Fire Shuriken stashed somewhere, I suppose.
By pre-casting Fiery Eyes (as either a last-minute prep, a rod-quickened spell, or done in the surprise/1st round), you can ignite all combustibles in one spot (assumed to apply to a 5ft-square area). Candles' combustible parts are the wicks, which means you can ignite all candlewicks in said area and activate #X amount of spells using only a full-round action. The spells set off a round after, though. If any of these spells are identical, you get a stacking DC/SR-penetration bonus due to Spell Rehearsal. If you also pre-cast spell <A> a round before using this trick, you get to use your default CL and apply one metamagic (like Heighten) from the pre-cast spell to any spell <A>s cast using the candles, courtesy of Residual Magic.
You are also a shadowcraft mage with Spell Rehearsal and Residual Magic, which means you get to spam Silent Images with increasing DC and free Heighten once every 2 rounds. Your maximum capacity is CL 14 8th-Heightened Silent Image that mimics a 5th level Sor/Wiz Evocation/Conjuration(Creation/Summoning) spell. Combining this with Candle Caster and Spell Rehearsal will lead to ridiculous DC/SR-penetration increase.
For starters, you now have Echoing Spell, which means effectively having ALL your spells prepared (at a lower CL) because of it due to having no time limit. If Wizard is "Batman: The Class", this feat is practically "Batman: The Metamagic Feat". All your spells 5th-level or lower are now available to be cast at a -4 CL as if you have them prepared. Everytime you recast such spells, they will Echo (aka can be recast again) with another -4 CL penalty available 1 hour thereafter, until you no longer have enough CL (but isn't specifically defined anyway).
With Earth Spell, and optionally by staying at your sanctum/church*, you can cast a [CL 22 8th-Heightened (Sanctum) Silent Image that mimicked any 8th(9th) level Sor/Wiz Evocation/Creation/Summoning spell]. Now, you have two options:
A. If combat practically ended in the round where you fired-off that spell, then congratulate your party and cast an Echoing Silent Image. Residual Magic turns this into the above bracketed line, minus the parentheses and with the normal Echoing CL decrease, and will start of its Echoing Spell chain. Of course, every Echoing Silent Image spell you cast in conjunction with any casting from the first Echoing Heightened Silent Image chain will also start off its own Echoing Heightened Silent Image chain via Residual Magic.
B. If combat didn't end on the 1st/2nd round with your spell], you can "Nova" next round by igniting a crapton of cheap <CL1 (Sanctum) Silent Image> Candles that now work as the above bracketed line, adjusted depending on if you imbued Sanctum Spell on your candles. You then also get a crapton of DC and SR-penetration increase for these; even assuming a paltry amount of 10 candles, will give the last candle a +10 bonus. If you want more expensive ammunitions that have higher bigger pay-offs, a CL1(or 7) Echoing Silent Image candle comboed as above will set-off its own CL 22 8th-Heightened (Sanctum) Silent Image echoing spell chain.
You can also either blow some of your WBL to "Nova" with any other spell candles, or pre-cast other heightened lower-level spells and let Residual Magic do its work. Minor benefits include making "specialty candles" (notably Silent Image ones) applied with Enlarge/Empower, and making Unfettered Candles (effectively a Potion) used by others by specific methods of lighting via Tindertwig, Flint & Tinder, or Magnifying Glass.
One more trick for this level: You can cast/spam Shalintha's Delicate Disk (LEoF) (via Shadow Illusion, possibly combined with Echoing Spell chains), which makes a disk where you can store any <5th-level spell of yours. Stock all of those disks with all sort of spells of yours, then use the Violent Thrust option of your Telekinesis to throw up to 15 disks at your opponent (debuff/poisons/SoD), ally(buff), or area of your choice, for another multiple-spell-per-turn trick. Yo dawg, interestingly, you can store a telekinesis spell in a Disk, so in reality, you aren't really limited to throwing 15 disks at a time. Of course, this more of a native Shadowcraft Mage trick, so it's a bit unthematic for your candle caster, unless you fluff those disks as Hosts or something.
* You are a candle caster. Where exactly do you think you will likely come from?
The access to higher spell level will get you the ability to "Nova" with those spells too, and allows a higher heightened spell cap for those who abuse Heighten/Earth spell (likely with Residual Magic).
You also get Repeat Spell, which increases your "Nova" when used as Repeat spell candles (notably Silent Image ones). Residual Heighten + #X Repeat spell candles will give #X Repeat Heightened spells. On the next round, your recast (via normal candle Repeat) #X Heightened-Spells will combine with the Residual Repeat, so that you effectively cast #X Repeat-Heightened spells. On the next round, your recast another (via the residual Repeat) #X Heightened Spells. You now effectiely did your "Nova" thrice. Alternatively, instead of doing a nova, you may just use prepared Repeat spells to recycle steps 3 to step 1. This chain also likely ends with an Echoing Spell chain, appended at the last residual Heighten.
Step 1: !H + X-R = X-RH
Step 2 !R + X-H = X-RH
Step 3 !H + X-E = X-RH
Legend: !-Residual, H-Heighten, R-Repeat, X-Spell of Choice