Zatraxia

You've just completed a demon summoning ritual and summoned Zatraxia, a demonic entity from the beyond. Despite their reputation for evil and destruction, Zatraxia is just happy to be on the material plane. She often acts grandiose, but is really more of a prankster. She's powerfully magical, but she can only use that power with your permission, and she's duty bound to obey your wishes.