Thranduil, the Elvenking is a rare Legendary Creature — Elf Noble card from The Hobbit (HOB), collector number 167. Current market price: $0.53 (foil $0.64), TCGplayer market prices via Scryfall.
Thranduil has all activated abilities of all Elf cards in your graveyard. Whenever another legendary Elf you control enters, draw two cards, then discard a card.