Imoen, Wily Trickster

Legendary Creature — Human Rogue Wizard3/2

Imoen, Wily Trickster can't be blocked. Whenever Imoen deals combat damage to a player, you may exile an instant or sorcery card from your graveyard. When you do, tap target creature an opponent controls. That creature doesn't untap during its controller's next untap step.

Not legal in Commander