Krenko, Mob Boss is a rare Legendary Creature — Goblin Warrior card from Duel Decks: Merfolk vs. Goblins (DDT), collector number 52. Current market price: $2.48, TCGplayer market prices via Scryfall.
{T}: Create X 1/1 red Goblin creature tokens, where X is the number of Goblins you control.