Aid Another expansions compilation

[flappeercraft]

Looking to compile a list of things that improve or somehow change how aid another works. All first party 3.5, unupdated 3.0, web archives, and dragon/dungeon mag is fair game.

So far this is what I have. Any additions are welcome.



Modifier
Effect
Source


Aid Giver; feat
Full-round action to grant an AC or attack roll bonus to all adjacent allies.
Dragon Magazine #343


Amulet of Teamwork; magic item
Improve the Aid Another bonus from +2 to +3 along with giving damage bonuses when flanking for you and the ally you flank with.
MIC


Arvoreen's Keeper; PrC
Aid another bonus set to +4.
Dragon Magazine #321


CAdv/RC Rules
5 ranks in a skill or +5 BAB respectively allow you to increase the bonus given if your roll is high enough
RC & CAdv


Changeling Rogue; substitution level
Get a scaling bonus to all knowledge checks. When using aid another on a knowledge check, this bonus is also given to the ally.
RoE


Clarion Commander; feat
Using the pile on tactical option allows you to make an AoO if you assist on the attack roll and the ally hits a target you also threaten. The hit must be done before your next turn but technically does not have to be the attack you helped in. Only one attack can be gained this way.
ToB


Climbing Squad
If the climb leader reaches the top or a safe point, he may aid another to grant teammates a +4 instead of +2. Members after the team leader only take a -2 to accelerated climbing. Team leader must use a move action every turn for this to give benefits.
Dungeonscape


Commander fighter; variant
Aid another at 60ft for attack roll/AC if ally can hear and understand you.
Dragon Magazine #310


Dvati
When using to boost attack rolls or armor class on your twin, bonus increases by +2
Dragon Compendium


Great Captain; feat
If in command of a vessel, may use aid another on every crew member that is performing the same action. Uses a move action.
Stormwrack


Handle Animal tricks; skill
Tricks are Assist Attack, Assist Defend, and Assist Track. Animals may use aid another for these.
CAdv


Hindering Opportunist; feat
If someone provokes an AoO from you, you can replace it with aid another against that target.
PHB2


Holy Symbol of Protection; item
Special 100gp non-magical holy symbol that only works for clerics with the protection domain. The wielder gains a +1 circumstance bonus on his attack roll when using aid another to give an ally a bonus to AC.
Dragon Magazine #331


Improved Aid Another; feat
Set aid another bonus to +4
Dragon Magazine #323


Improved Aid; feat
Set aid another bonus to +4 for attack rolls/AC
OA


Improved Familiar; feat
If you take improved familiar and have a raven familiar, if you make a knowledge check in which you have at least 1 rank, it may make an int check DC 10 to give you a +2 bonus.
Dragon Magazine #331


Joint Grapple Escape; teamwork benefit
If you aid another to escape a grapple in their grapple or escape artist check, ally gains a +4 bonus or your strength mod, whichever is bigger.
DMG2


Joint Ram; teamwork benefit
Teammate gets a +4 on checks to ram doors or similar for each teammate that helps with aid another.
HoB


Kenku; race
When receiving or giving aid, the bonus is +3. Only applies to attack rolls and skill checks.
MM3


Legendary Captain; PrC
+4 to aid another to your crew. Aid another AoE on ally crew checks.
Stormwrack


Noble; class
Gives a scaling additional bonus to aid another but doesn't work for combat.
DCS


Outcast Champion; PrC
Increase aid another bonus by +2 for attack rolls, AC or skill checks. Applies to your aid another's or those of allies within 30ft that can see/hear you.
RoD


Paladin Vigilant Eye Helm; substitution level
Aid another as a move action but only for AC and only once per ally per round
CoV


Purple Dragon Knight; PrC
Increase AC bonus from aid another to +4
CW


Prime Underdark Guide; PrC
One class feature allows aid another to allies within 30ft that can see or hear you, another allows you to apply this to one ally per class level. Only applies to certain skill checks.
Underdark


Quell; monster
Can aid another on each other to make their "Intercession" ability more powerful. It's a pseudo-like turning effect that gets increased cleric level from the aid another.
LM


Sand Hunter; monster
Can aid another on other sand hunters on attack rolls for +4, or on grapple checks to give a +2 to pin the opponent.
Sandstorm


Spellcaster Support; feat
Aid another with a spellcraft check to increase the save DC of an allied shugenja's spell by 2.
OA


Stalwart Defense; feat
When an opponent you threaten attacks one of your allies, you can use it to make an aid another for that ally to boost his AC. 1/round limit per foe.
PHB2


Superior Team Tactics; teamwork benefit
Team members attempting aid another only need to reach DC 5 instead of 10.
PHB2


Team Melee Tactics; teamwork benefit
Increase aid another bonus on team members by 1 for attack rolls.
PHB2


Windrider; PrC
Aid another on mount gives a +4 bonus.
MotW


Wolfpack; feat
If an ally gives you an aid another on your attack roll against a foe you both threaten, you make a melee attack as a full-round action. If you hit you get a free bull rush with some modifications.
RotW


Yugoloth Battleloth, Sword; monster
Monster that turns into a +1 longsword. Can aid another its wielder.
Dragon Magazine #306

[sleepyphoenixx]

Clarion Commander (ToB, feat) - if you use aid another to help an ally with a melee attack on a foe you both threaten you get an AoO if your ally hits

Hindering Opportunist (PH2, feat) - when an opponent provokes an AoO from you you can replace that attack with an aid another action targeting that opponent

Stalwart Defense (PH2, feat) - when an opponent you threaten attacks an ally in melee you can give up an AoO to give the ally +2 AC on that attack

Spellcaster Support (OA, feat) - use aid another with a spellcraft check to increase the save DC of an allied shugenja's spell by 2

Wolfpack (RotW, feat) - if an ally you threaten an opponent with uses aid another to boost your attack you can attack as a full round action and get a free, boosted bull rush attempt if you hit

Joint Grappe Escape (DMG2, teamwork benefit) - if a member of the team uses aid another to help another member escape from a grapple the helped member gets a bonus on his grapple/EA check of +4 or the helpers Str-mod, whichever is higher.

Joint Ram (HoB, teamwork benefit) - if your team uses a ram to destroy an object they get +2 to damage for every team member helping. If a team member tries to break down a door or ram something he gets a +4 on the check for every team member assisting with aid another

Superior Team Effort (PH2, teamwork benefit) - any team member using aid another to help another team member only needs a DC 5 check to succeed instead of DC 10

Team Melee Tactics (PH2, teamwork benefit) - whenever a team member uses the aid another action to grant another member a bonus on attack rolls that bonus increases by 1

[Zarvistic]

From champions of valor, vigilant eye of helm - 3rd paladin sub level makes it a move action.

Dragon 343, aid giver feat.
Stormwrack, great captain feat.

[Biggus]

Amulet of Teamwork (MIC p.70) increases bonus from +2 to +3

[ShurikVch]

Outcast Champion 4 - Teamwork: when you - or any ally within 30' of you - using Aid Another for AC, attack roll, or skill check - it gives +4 (instead the usual +2)
Prime Underdark Guide 1-2 - Aid Another Nearby: can use Aid Another for Balance, Climb, Jump, Survival, Swim, or Use Rope checks from up to 30' distance; Aid Group: as the previous, except simultaneously helps up to 1 creature per class level with every use of Aid Another
Purple Dragon Knight 1 - Heroic Shield: Aid Another for AC gives +4 (instead the usual +2)
Windrider 2 - Mount Assistance: +4 (instead the usual +2) to AC, attack roll, skill check, or ability check of your Mount

[Metastachydium]

The Great Ally extraordinary racial ability of a KENKUMM3 increases all aid another bonuses to +3, regardless whether the birdy offers or receives aid.

[flappeercraft]

I have updated the list to include all the suggestions. Keep it going. More is appreciated!

[ShurikVch]

Ways to receive the Aid Another benefits:
Handle Animal, tricks (Complete Adventurer) - Assist Attack, Assist Defend, and Assist Track
Improved Familiar, Raven (Dragon #331) - Raven uses Aid Another for your Knowledge checks
Yugoloth Battleloth, Sword (Dragon #306) - when you wield it in their Sword Form, they can use Aid Another for your attacks with it

Teamwork Benefits:
Climbing Squad (Dungeonscape) - leader can Aid Another for +4 bonus on Climb checks to other members of the squad
Joint Ram (Heroes of Battle) - +4 bonus for each character which participating in the ramming (DM is supposed to limit the maximum possible number of participants)

Arvoreen's Keeper PrC (Dragon #321) - 9th-level Team Player CF: Aid Another gives +4 bonus (instead the usual +2)

Monsters using Aid Another:
Quell (Libris Mortis) - if Quell uses Aid Another for Intercession SA of another Quell, it grants +1 "effective cleric level" to the Intercession of this Quell (Intercession is a "turn divine spellcaster" - affected characters are unable neither cast their spells, nor Turn/Rebuke Undead)
Sand Hunter (Sandstorm) - if Sand Hunter uses Aid Another for attack of another Sand Hunter, the bonus granted is +4 (instead the usual +2)

[Thurbane]

The annoying thing about most abilities that increase the bonus from Aid Another is that they reset it from +2 to a higher number, rather than grant a bonus on top of the +2 - which means most of them don't stack.

I think I found one not on the list - Noble 4 (Coordinate): +1 to aid another, which increases by another 1 every 4 levels. The wording is a little odd, but I think this is what it does.

[ShurikVch]

Changeling Rogue substitution level (Races of Eberron):

Minor Lore (Ex): Thanks to his varied personas and pursuits, a changeling rogue picks up bits of stray knowledge. Beginning at 3rd level, he gains a +1 bonus on all Knowledge checks (though this bonus doesn't change an untrained check to a trained check), improving by +1 every three levels thereafter (to +2 at 6th level, +3 at 9th, and so on). In addition, whenever the rogue successfully aids another character's Knowledge check, that character can apply this bonus on his check result (in addition to the normal bonus granted by the rogue's aid another attempt).
This substitution feature replaces the standard rogue's trap sense ability, which can never be gained at later levels.