Unnerving Grasp is a uncommon Sorcery card from Duskmourn: House of Horror (DSK), collector number 80. Current market price: $0.19 (foil $0.25), TCGplayer market prices via Scryfall.
Return up to one target nonland permanent to its owner's hand. Manifest dread. (Look at the top two cards of your library. Put one onto the battlefield face down as a 2/2 creature and the other into your graveyard. Turn it face up any time for its mana cost if it's a creature card.)