Angelic Sleuth is a rare Creature — Angel Advisor card from New Capenna Commander Promos (PNCC), collector number 12p. Current market price: — (foil $8.39), TCGplayer market prices via Scryfall.
Flying Whenever another permanent you control leaves the battlefield, if it had counters on it, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")