Discussion thread can be found
here with my other mini-handbooks.
The Abjurant Champion PrC from Complete Mage page 50 has this lovely little ability:
Abjurant Armor (Su): Any time you cast an abjuration spell that grants you an armor bonus or shield bonus to AC, you can increase the value of the bonus by your abjurant champion class level. Abjurant champions rely on shield and similar spells instead of actual armor.
I poked through Captnq's spell list looking for everything that qualifies for it and came up with a total of 7 spells. Here they are:
Armor Bonus:
Ectoplasmic Armor (Sorc/Wiz 1) Libris Mortis page 64/ Spell Compendium pages 77-78
Luminous Armor (Sanct 2) Book of Exalted Deeds page 102
Luminous Armor, Greater (Sanct 4) Book of Exalted Deeds page 102
Shield Bonus:
Deflect (Duskblade 2, Sorc/Wiz 2) Player's Handbook 2 page 109
Dragonmark Shield (Sorc/Wiz 1) Dragonmarked (Eberron) page 150
Shield (Abjuration Wiz domain 1, Knight of the Weave 1, Merchant Prince 1, Sorc/Wiz 1, Wu Jen 1) PHB page 278
Repelling Shield (Sorc/Wiz 3) Complete Mage page 115
Abjurant Champion Psionic Adaptation:
The only powers that would benefit from the ability to boost an armor bonus or shield bonus are:
Armor Bonus:
Inertial Armor (Psion/Wilder 1, Psychic Warrior 1) Expanded Psionics Handbook page 113
Shield Bonus:
Force Screen (Psion/Wilder 1, Psychic Warrior 1) Expanded Psionics Handbook page 108
Paragnostic Apostle: The Paragnostic Apostle (Complete Champion 94) has an ability called
Mind Over Matter:
Mind over Matter: Whenever you cast a spell that creates a solid object, its hardness and hit points each increase by 2. When you cast a spell that provides an armor bonus, that bonus to AC also increases by 2. (Knowledge [architecture and engineering] 5 ranks)
Spells that benefit from the AC bonus of
Mind Over Matter are:
Ectoplasmic Armor (Sorc/Wiz 1) Libris Mortis page 64/ Spell Compendium 77-78
Luminous Armor (Sanctified 2) Book of Exalted Deeds page 102
Luminous Armor, Greater (Sanctified 4) Book of Exalted Deeds page 102
Bulwark of Reality (Sorc/Wiz 1) Tome of Magic page 256
Golden Barding (Blackguard/Paladin 1) Complete Divine page 166/ Spell Compendium page 106
Mage Armor (Beguiler 1, Conjuration Wiz Domain 1, Court Herald 1, Force Domain 1, Knight of the Weave 1, Merchant Prince 1, Sorc/Wiz 1, Spell Domain 1, Windrider 2) Player’s Handbook page 249
Mage Armor, Greater (Sorc/Wiz 3) Anauroch: The Empire of Shade page 143/ Complete Arcane page 114/ Spell Compendium page 136
Mage Armor, Improved (Sorc/Wiz 3) Unapproachable East page 51
Mailed Might of the Magelords (Sorc/Wiz 5) Lost Empires of Faerun page 32
Honorable mentions:
The Sanctified One (Complete Champion) choosing Wee Jas as the chosen deity can get the ability Armor of Law, which is a supernatural ability that boosts your armor bonus to AC (or shield bonus if you lack an armor bonus to AC) equal to the Sanctified One's class level. As this isn't dependent on spells or powers it doesn't need an index for such things, but it is getting a mention here because the ability is similarly themed to the Abjurant Champion's ability.
The Argent Savant (Complete Arcane) 2nd level ability Force Armor adds +2 to the AC of any Force spell that grants an Armor Bonus or Shield Bonus to AC. Spells that benefit from this include:
Mage ArmorShieldBulwark of Reality (Sorc/Wiz 1) Tome of Magic page 256
Coat of Arms (Sorc/Wiz 5) Complete Mage
Deflect (Duskblade 2, Sorc/Wiz 2) Player's Handbook 2 page 109
Dragonmark Shield (Sorc/Wiz 1) Dragonmarked (Eberron) page 150
Repelling Shield (Sorc/Wiz 3) Complete Mage page 115
