Persistent Constrictor - Commander: Duskmourn: House of Horror - #0022At the beginning of each opponent's upkeep, they lose 1 life and you put a 1 1 counter on up to one target creature they control. Persist (When this creature dies, if it had no 1 1 counters on it, return it to the battlefield under its owner's control with a 1 1 counter on it.) Rarity: R #: 22 Card Type: Creature Zombie Snake P T: 5 3 Casting Cost: 4B