Elektra, Daughter of the Hand

Legendary Creature — Human Ninja Villain

Sneak (You may cast this spell for if you also return an unblocked attacker you control to hand during the declare blockers step. She enters tapped and attacking.) When Elektra enters, destroy target creature an opponent controls with power 3 or less.

"I am Elektra Natchios. Not even the stars are safe in the sky."