Glint Hawk Idol is a common Artifact card from Scars of Mirrodin (SOM), collector number 156. Current market price: $0.07 (foil $0.40), TCGplayer market prices via Scryfall.
Whenever another artifact you control enters, you may have this artifact become a 2/2 Bird artifact creature with flying until end of turn. {W}: This artifact becomes a 2/2 Bird artifact creature with flying until end of turn.