Aatrox, the Darkin Blade

Flying, lifelink, triple strike (Deals damage during
first and second damage steps, and a final third
damage step if creature is still alive.)
If Aatrox, the Darkin Blade attacks and at the
end of the attack step doesn't deal damage, you
lose 4 life and Aatrox doesn't untap during your
next untap step.
"I must destroy even hope..."