Componentless Casting (3.5e Feat)
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This is an attempt to do away with some annoyances in the spellcasting system with a feat. No idea how to get this off Homebrew though.
Componentless Casting [Metamagic]
Through your own rituals, you can ignore the horrible cost of body and mind that other spellcasters must pay.
Prerequisite: Caster level 20 NPC only
Benefit: You can ignore the material and XP cost of any spell, at the cost of an epic spell slot used during casting per 5,000XP and 10,000Gold. In addition, you can ignore up to 500 gp in material components for a spell per rank of Knowledge (Arcana) that you have.This feat is in dragon magazine 387 pg. 42.