Persistent Constrictor

Creature — Zombie Snake

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 there were no -1/-1 counters on this, return this to the battlefield under this owner's control with a -1/-1 counter.)

Legality

Format	Legality
1v1 Commander	Legal
Block Constructed	Legal
Canadian Highlander	Legal
Casual	Legal
Commander / EDH	Legal
Commander: Rule 0	Legal
Custom	Legal
Duel Commander	Legal
Gladiator	Legal
Highlander	Legal
Legacy	Legal
Leviathan	Legal
Limited	Legal
Oathbreaker	Legal
Planar Constructed	Legal
Vintage	Legal