Needs review
Source: Epic Level Handbook

Description: Your spells of a particular alignment are more powerful than normal.

Prerequisites: Epic Level, Ability to cast 9th-level divine spells, Access to an alignment based domain (Chaos, Evil, Good, Law) - alignment must match domain chosen

Select an alignment-based domain (Chaos, Evil, Good, or Law) to which you have access. You cast spells with that alignment descriptor at +3 caster level.

Special

This benefit overrides (does not stack with) the granted powers of the Chaos, Evil, Good, and Law domains. You may select this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a different alignment-based domain to which you have access.