Panther Pounce is a common Instant card from Marvel Super Heroes (MSH), collector number 29. Current market price: $0.14 (foil $0.18), TCGplayer market prices via Scryfall.
Target player investigates. Target creature gets +1/+0 and gains flying until end of turn. Untap it. (To investigate, create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")