Dáin, Lord of the Iron Hills is a uncommon Legendary Creature — Dwarf Noble card from The Hobbit (HOB), collector number 8. Current market price: $0.27 (foil $0.27), TCGplayer market prices via Scryfall.
Vigilance Storied (If you control three or more artifacts, legendaries, and/or Sagas, you have an enduring story for the rest of the game.) As long as you have an enduring story, creatures can't attack you unless their controller pays {1} for each of those creatures.