Profane Energy Burst (Epic)

You can use your rebuke or command ability to seriously injure good creatures.

The Gates of Hell (Dice Freaks)

Grimoire of Cosmic Entities Volume One By Eli Atkinson, William Church and Serge W. Desir, Jr.
Original Concept by Serge W. Desir, Jr.

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• Prerequisites: Charisma 25, ability to rebuke or command creatures as a cleric rebukes or commands undead, ability to cast Vile Lance, evil alignment.
• Benefit: The character can use one rebuke or command attempt to unleash a wave of profane energy in a 60- foot-burst. Roll a normal rebuke check, except that the profane energy burst affects good, living creatures rather than the normal creatures the character can rebuke or command. Any creature that would be affected by this result takes vile damage equal to 2d6 + your Charisma modifier.