Mastery Over Wild-Magic Familiars

You gain the ability to channel wild Fey magic through your familiars body. While doing so your familiar mutates into a medium size creature, has the ability to take the attack action on your turn, can also be telepathically commanded from up to 500 ft. Once this transformation occurs the lasting effects can not be undone to said familiar and the caster will be unable to ever summon their familiar in a different form (cat, dog, bat, etc.) afterwards. This transformation lasts a number of minutes equal to the casters spell casting modifier (minimum of 1 minute) and can only be done once per familiar summon. Once the transformation ends, the familiar disappears and cannot reappear until it is summoned again through normals means.