Bitter Rebuke

Heroic Tier
Prerequisite: Invoker, Divine Covenant class feature, rebuke undead power
Benefit: Modify rebuke undead based on your Divine Covenant.
Covenant of Malediction: When you hit a creature with rebuke undead, it takes a -2 penalty to attack rolls until the end of your next turn.
Covenant of Preservation: When you hit a creature with rebuke undead, it is slowed until the end of your next turn.
Covenant of Wrath: When you hit a creature with rebuke undead, you can push it a number of squares up to 2 + your Constitution modifier instead of only 2 squares.

Published in Dragon Magazine 387, page(s) 40.