Is there a feat in Dungeons & Dragons 3.5 which gives a spell caster the ability to use Intelligence instead of Charisma to determine spell DC?
closed as not a real question by Quentin, Pat Ludwig Dec 10 '11 at 22:06
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Looking here, we get... nothing.
There are no bonuses that change the DC of a spell from charisma to intelligence for core 3.5 books. However, the Illumians have the abilit to key off Dex or Strength.