Ob Nixilis, Vengant

+1: Lose 1 Life and draw a card. If it is a creature, you may reveal it and discard it to put a 2/2 "Corrupted Servant" token onto the battlefield.
-3: Destroy target Planeswalker
-10: Destroy all creatures and all other planeswalkers. For each permanent destroyed this way, put a 5/5 "Corrupted Horror" token onto the battlefield