Palantír of Orthanc is a mythic Legendary Artifact card from The Hobbit Commander (HOC), collector number 45. Current market price: $21.41 (foil $25.44), TCGplayer market prices via Scryfall.
At the beginning of your end step, put an influence counter on Palantír of Orthanc and scry 2. Then target opponent may have you draw a card. If that player doesn't, you mill X cards, where X is the number of influence counters on Palantír of Orthanc, and that player loses life equal to the total mana value of those cards.