Stangg is a rare Legendary Creature — Human Warrior card from Chronicles (CHR), collector number 86. Current market price: $0.44, 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.