Endling is a rare Creature — Zombie Shapeshifter card from Modern Horizons (MH1), collector number 89. Current market price: $0.28 (foil $0.59), TCGplayer market prices via Scryfall.
{B}: This creature gains menace until end of turn. {B}: This creature gains deathtouch until end of turn. {B}: This creature gains undying until end of turn. (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.) {1}: This creature gets +1/-1 or -1/+1 until end of turn.