Rivendell is a mythic Legendary Land card from The Hobbit Commander (HOC), collector number 51. Current market price: $4.51 (foil $4.71), TCGplayer market prices via Scryfall.
Rivendell enters tapped unless you control a legendary creature. {T}: Add {U}. {1}{U}, {T}: Scry 2. Activate only if you control a legendary creature.