Boromir, Gondor's Hope is a rare Legendary Creature — Human Warrior card from Tales of Middle-earth Commander (LTC), collector number 452. Current market price: $1.10 (foil $1.60), TCGplayer market prices via Scryfall.
Whenever Boromir enters or attacks, look at the top six cards of your library. You may reveal a Human or artifact card from among them and put it into your hand. Put the rest on the bottom of your library in a random order.