Injector Crocodile is a common Creature — Phyrexian Crocodile card from The List (PLST), collector number MOM-329. Current market price: $0.09, TCGplayer market prices via Scryfall.
When this creature dies, incubate 3. (Create an Incubator token with three +1/+1 counters on it and "{2}: Transform this token." It transforms into a 0/0 Phyrexian artifact creature.) Swampcycling {2} ({2}, Discard this card: Search your library for a Swamp card, reveal it, put it into your hand, then shuffle.)