Dáin Ironfoot is a rare Legendary Creature — Dwarf Warrior card from The Hobbit (HOB), collector number 91. Current market price: $0.23 (foil $0.33), TCGplayer market prices via Scryfall.
When Dáin enters, create a colorless Equipment artifact token named Axe with "Equipped creature gets +1/+0" and equip {2}. When you do, attach it to target creature you control. Whenever Dáin attacks, each equipped attacking creature gains double strike until end of turn.