Alix, Hidden Nobility

Flash, Deathtouch, First Strike
Sneak Attack: When Alix, Hidden Nobility enters
the battlefield, destroy tapped target creature.
Cunning Action: Whenever you cast a sorcery or an instant, you may return Alix to your hand.
"From my father's dark reign, I fled to the streets.
Spells and secrets, my allies discreet."