Karmatic Retribution

Karmatic Retribution deals 3 damage to target creature or player.
Kicker {1}{w/b} (You may pay an additional {1}{w/b} as you cast this spell.)
If Karmatic Retribution was kicked, it has infect. (It deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)
He can feel your sins, crawling across your back.