Barbed Wire is a uncommon Artifact card from Mercadian Masques (MMQ), collector number 287. Current market price: $1.36 (foil $23.61), TCGplayer market prices via Scryfall.
At the beginning of each player's upkeep, this artifact deals 1 damage to that player. {2}: Prevent the next 1 damage that would be dealt by this artifact this turn.