Kazkrak, Blazing War Leader

Whenever you cast a spell that would destroy a creature, exile that creature instead until Kazkrak, Blazing War Leader leaves the battlefield. (They return to the battlefield under their owner's control)
{10}{r}{r}, Sacrifice Kazkrak, Blazing War Leader: Return all creatures exiled by Kazkrak, Blazing War Leader under your control.
As they follows behind his lead, the flames grow stronger, as does his army.