Grima Wormtongue

When Grima enters the battlefield, target opponent reveals his or her hand. You choose a nonland card from it. Put that card on top of their library, then shuffle their library.
{t}{3}{b}: Target opponent chooses a card from their hand. That card is exiled until Grima Wormtongue leaves the battlefield.
"But, my lord, there is no such force..."