Briarbridge Tracker is a rare Creature — Human Scout card from Innistrad: Double Feature (DBL), collector number 172. Current market price: $0.24 (foil $0.33), TCGplayer market prices via Scryfall.
Vigilance (Attacking doesn't cause this creature to tap.) When this creature enters, investigate. (Create a Clue token. It's an artifact with "{2}, Sacrifice this token: Draw a card.") As long as you control a token, this creature gets +2/+0.