Fireshrieker is a uncommon Artifact — Equipment card from Magic 2014 (M14), collector number 210. Current market price: $0.37 (foil $2.51), TCGplayer market prices via Scryfall.
Equipped creature has double strike. (It deals both first-strike and regular combat damage.) Equip {2} ({2}: Attach to target creature you control. Equip only as a sorcery.)