Covenant of Repentance is a 27th level avenger Encounter power that was introduced in the 382nd edition of Dragon (magazine).
Covenant of Repentance
Avenger Attack 27
You demand penitence from those who have flouted the will of
your god, and you harm those who refuse to repent.
Ranged 5
Target: One creature
Attack: Wisdom vs. Will
Hit: 3d8 + Wisdom modifier necrotic damage, and you knock the target prone. If the target is not prone at the end of its next turn, it takes 10 extra necrotic damage.
Effect: If the target is your oath of enmity target, you can roll twice on this attack and use either result.