You can only use this card name’s (2) effect once per turn.
(1) If you control a Level 8 or higher Synchro Monster: Banish as many monsters on the field as possible, except the monster(s) with the highest Level, and if you do, face-up monster(s) on the field that were not banished by this effect are unaffected by card effects this turn, except their own.
(2) If a DARK Dragon Synchro Monster is Synchro Summoned to your field while this card is in your GY: You can add this card to your hand.