Professor of Zoomancy is a common Creature — Bear Druid card from Strixhaven: School of Mages (STX), collector number 140. Current market price: $0.18 (foil $0.12), TCGplayer market prices via Scryfall.
When this creature enters, create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life."