Astre

As part of becoming a mage, you must call out to the otherworldly powers and grant them a fitting sacrifice. In return, they will grant you their power and guidance, though it is certainly common for the eldritch horrors beyond to trick their mortal hosts. When you called out, you were met by Astre, an astonishingly powerful being. While their motives for responding to you are unknown, it is said that Astre possesses terrifying wisdom. Should they see a mage as unworthy, they will cause great pain, but for a respectable host, they will be a loyal companion.