Oblivion Sower is a mythic Creature — Eldrazi card from Battle for Zendikar Promos (PBFZ), collector number 11s. Current market price: — (foil $11.21), TCGplayer market prices via Scryfall.
When you cast this spell, target opponent exiles the top four cards of their library, then you may put any number of land cards that player owns from exile onto the battlefield under your control.