Wrath of the Ancient Machine

Caster can summon an old, powerful automaton from beyond the stars, belonging to a civilization long passed; a portal opens and a enormous, 17 meter tall robot imbued with an ancient dark power that once ended its creators; now lives within its artificial soul. After being summoned the Machine will attack any enemy the caster wishes in turn of normal rolls, it emits a black energy beam from its eyes dealing 45 necrotic damage, after the duration of the spell has expired the Machine will return through the portal back to the place of its origins.