Fire Elemental

"The crops of Amonkhet knew to use fire to it warm
them, light the night, cook their food, and even
summoning it forth to burn things. It was a odd to
them that people from Triterrion's world saw it as
sacred. They summoned it, sometimes in forms they
particularly favored; and sent them charging into
hordes of the Wandering Dead. rather than warriors."