Bramble Armor is a common Artifact — Equipment card from Innistrad: Midnight Hunt (MID), collector number 171. Current market price: $0.09 (foil $0.29), TCGplayer market prices via Scryfall.
When this Equipment enters, attach it to target creature you control. Equipped creature gets +2/+1. Equip {4} ({4}: Attach to target creature you control. Equip only as a sorcery.)