Death Tyrant is a rare Creature — Beholder Skeleton card from Forgotten Realms Commander (AFC), collector number 292. Current market price: $2.59, TCGplayer market prices via Scryfall.
Menace Negative Energy Cone — Whenever an attacking creature you control or a blocking creature an opponent controls dies, create a 2/2 black Zombie creature token. {5}{B}: Return this card from your graveyard to the battlefield tapped.