Alisaie, Scion Duelist

Lifelink, first strike
Whenever Alisaie, Scion Duelist deals combat
damage to a player, you may exile target creature
that player controls with mana value less than or
equal to the damage dealt until Alisaie leaves the battlefield.
{1}{w}{b}, {t}: Alisaie, Scion Duelist fights target creature you don't control.