Arcane Warrior (3.5e Feat)
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Arcane Warrior [General]
It has taken years, but you have finally mastered the art of armored spellcasting, letting you wear even the heaviest of armor without fear of ruining your spells.
Prerequisite: Base attack bonus +12, Battle Caster CAr
Benefit: You are able to wear armor one category heavier than you can normally wear while still avoiding the chance of arcane spell failure. For example, if you have the ability to normally wear medium armor without incurring a chance of spell failure, you can wear heavy armor and continue to cast spells as normal. This ability does not extend to shields, nor does it apply to spells gained from spellcasting classes other than the class that provides the ability to cast arcane spells while in armor.