Meddling Youths is a uncommon Creature — Human Detective card from Murders at Karlov Manor (MKM), collector number 367. Current market price: $0.06 (foil $0.06), TCGplayer market prices via Scryfall.
Haste Whenever you attack with three or more creatures, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.")