Aatrox, Darkin Blade

{10}{b}{r}: Transform Aatrox, Darkin Blade
Whenever Aatrox, Darkin Blade attacks, create a Bloodlust emblem token
Whenever Aatrox, Darkin Blade attacks, if you
control 3 Bloodlust tokens, destroy them and
Aatrox gains double strike until end of turn
Now, hear the silence of annihilation!