Scuttlegator is a common Creature — Crab Turtle Crocodile card from Ravnica Allegiance (RNA), collector number 218. Current market price: $0.18 (foil $0.37), TCGplayer market prices via Scryfall.
Defender {6}{G/U}{G/U}: Adapt 3. (If this creature has no +1/+1 counters on it, put three +1/+1 counters on it.) As long as this creature has a +1/+1 counter on it, it can attack as though it didn't have defender.