The Band's Charm, Toko Kirigaya

【AUTO】 When this card attacks, choose 1 of your other 《Music》 characters, and that character gets +X power until end of turn. X is equal to the number of other 《Music》 characters you have ×500. 【AUTO】 Change [Put this card into your waiting room] At the beginning of your climax phase, you may pay the cost. If you do, choose 1 "Popular Girl Online, Toko Kirigaya" in your waiting room, and put it in the stage position that this card was in. (This ability does not activate if this card is not in the stage at the beginning of the climax phase)