Infantry Shield is a rare Artifact — Equipment card from Tarkir: Dragonstorm Commander (TDC), collector number 75. Current market price: $2.54, TCGplayer market prices via Scryfall.
Equipped creature has menace and mobilize X, where X is its power. (Whenever it attacks, create X tapped and attacking 1/1 red Warrior creature tokens. Sacrifice them at the beginning of the next end step.) Equip {2}