Faunsbane Troll (Wilds of Eldraine)

Creature — Troll - When this creature enters, create a Monster Role token attached to it. (Enchanted creature gets +1/+1 and has trample.)
{1}, Sacrifice an Aura attached to this creature: This creature fights target creature you don't control. If that creature would die this turn, exile it instead. Activate only as a sorcery.