Tomb Tyrant is a rare Creature — Zombie Noble card from Secret Lair Drop (SLD), collector number 854. Current market price: — (foil $2.93), TCGplayer market prices via Scryfall.
Other Zombies you control get +1/+1. {2}{B}, {T}, Sacrifice a creature: Return a Zombie creature card at random from your graveyard to the battlefield. Activate only during your turn and only if there are at least three Zombie creature cards in your graveyard.