Thalia's Lieutenant is a rare Creature — Human Soldier card from Shadows over Innistrad Promos (PSOI), collector number 43s. Current market price: — (foil $5.38), TCGplayer market prices via Scryfall.
When this creature enters, put a +1/+1 counter on each other Human you control. Whenever another Human you control enters, put a +1/+1 counter on this creature.