demonic destroyer

any demon fend or undead this is cast on must make a con saving throw, taking 5d10 radenet damage on a failed save and half as much on a scsesful one. on a failed save it must make a con saving throw on a fail becoming a humenod (dm choses new race) and will not go back to it's true form untill 6d6 hours, in it's weaker form it has no memory of the past 72 hours.   

at higher levels: it adds a extra 2d6 for each slot above 5th