Hunt for Specimens is a common Sorcery card from Strixhaven: School of Mages (STX), collector number 73. Current market price: $0.17 (foil $0.21), TCGplayer market prices via Scryfall.
Create a 1/1 black and green Pest creature token with "When this token dies, you gain 1 life." Learn. (You may reveal a Lesson card you own from outside the game and put it into your hand, or discard a card to draw a card.)