Leatherhead, Iron Gator is a rare Legendary Creature — Crocodile Mutant Rogue card from Teenage Mutant Ninja Turtles Eternal (TMC), collector number 30. Current market price: $0.28, TCGplayer market prices via Scryfall.
Trample, haste Whenever Leatherhead attacks, put two +1/+1 counters on each creature you control.