Hero of Leina Tower is a uncommon Creature — Human Warrior card from Ultimate Masters (UMA), collector number 169. Current market price: $0.22 (foil $0.15), TCGplayer market prices via Scryfall.
Heroic — Whenever you cast a spell that targets this creature, you may pay {X}. If you do, put X +1/+1 counters on this creature.