Xenk, Pyro Master

: At the beginning of your end step, Xenk deals 1 damage to target player.
0: Exile the top card of your library. If it's a nonland card, deal 1 damage to any target. If it's a land card, add a loyalty counter to Xenk.
-1: Deal 2 damage to any target. If it's a player, then deal 1 more damage to a random creature or planeswalker that player controls.