Pounding Heart, Rimi Ushigome (BD/W73-E054 U) [BanG Dream! Vol.2]

[AUTO] When this card attacks, choose 1 of your other "Poppin'Party" characters, and that character gets +2000 power until end of turn. [AUTO] [Put 1 card from your hand into your waiting room] At the beginning of your opponent's attack phase, you may pay the cost. If you do, move this card to an open position of your back stage.