Autrix, Ascendant Overseer

Flying, first strike, haste
Whenever Autrix, Ascendant Overseer attacks, you may pay {w}{u}. If you do, tap target creature defending player controls.
Whenever Autrix attacks, you may pay {u}{r}. If you do, create a token copy of target tapped creature defending player controls that's tapped and attacking. Exile it at the end of combat.