Persistent Constrictor

Mana Cost: {4}{B}
Total Cost: 5
Type: Creature — Zombie Snake
Description: At 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.)
Power: 5
Toughness: 3
Colors: B