Vaultguard Trooper is a uncommon Creature — Kavu Soldier card from Edge of Eternities (EOE), collector number 166. Current market price: $0.12 (foil $0.23), TCGplayer market prices via Scryfall.
At the beginning of your end step, if you control two or more tapped creatures, you may discard your hand. If you do, draw two cards.