Stangg is a uncommon Legendary Creature — Human Warrior card from Masters 25 (A25), collector number 218. Current market price: $0.20 (foil $0.12), TCGplayer market prices via Scryfall.
When Stangg enters, create Stangg Twin, a legendary 3/4 red and green Human Warrior creature token. Exile that token when Stangg leaves the battlefield. Sacrifice Stangg when that token leaves the battlefield.