Choose one — • Choose a nonland card name. Opponents can't cast spells with the chosen name until your next turn. • Choose target nonland permanent. Until your next turn, it can't attack or block, and its activated abilities can't be activated.
When Acquisitions Expert enters the battlefield, target opponent reveals a number of cards from their hand equal to the number of creatures in your party. You choose one of those cards. That player discards that card.