Jace, Secret Unraveler

+3: You gain control of target creature for two turns. It gets -2/-0 for your next two turns.
-2: Investigate. Choose a random card from your opponent's hand. If it's a land, do not add it to your hand. Instead, choose another random card.
-12: Target opponent gets an emblem with 'Whenever a creature enters the battlefield under your control, it gets -X/-0. Where X is is it's power'.