Stockman, Mad Fly-entist is a common Legendary Creature — Insect Mutant Scientist card from Teenage Mutant Ninja Turtles (TMT), collector number 54. Current market price: $0.10 (foil $0.21), TCGplayer market prices via Scryfall.
Flying When Stockman enters, draw a card, then discard a card. Islandcycling {2} ({2}, Discard this card: Search your library for an Island card, reveal it, put it into your hand, then shuffle.)