Undead Gladiator is a rare Creature — Zombie Barbarian card from Onslaught (ONS), collector number 178. Current market price: $0.79 (foil $14.96), TCGplayer market prices via Scryfall.
{1}{B}, Discard a card: Return this card from your graveyard to your hand. Activate only during your upkeep. Cycling {1}{B} ({1}{B}, Discard this card: Draw a card.)