Kahler-Tek, Gunslinger

First Strike
When Kahler-Tek, Gunslinger enters the battlefield or attacks, put a vengeance counter on target creature you don't control.
Make Peace with your Gods — {r}{w}{b}, Discard
a card: Kahler-Tek, Gunslinger deals X damage to target creature with a vengeance counter where X
is the discarded cards mana value.