SRD:Improved Alignment-Based Casting
From D&D Wiki
|This material is published under the OGL|
Improved Alignment-Based Casting [Epic]
This benefit overrides (does not stack with) the granted powers of the domain of Chaos, Evil, Good, and Law domains. A character may select this feat multiple times. Its effects do not stack. Each time a character takes the feat, it applies to a different alignment-based domain to which the character has access.