Purify the Unbeliever

Destroy target creature, if that creature is an Human, exile it instead.
Fanatism {6}{w/b}{w/b} - You can cast this spell by its Fanatism cost. If you do, choose a creature type. Destroy creatures of the chosen type target player controls. If the chosen type was Human, exile them instead. Then exile Purify the Unbeliever.