Scuttlegator is a common Creature — Crab Turtle Crocodile card from Ravnica: Clue Edition (CLU), collector number 206. Current market price: $0.11, 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.