“本気・待機……”丸山彩 is a Weiß Schwarz card from PRカード【Wサイド】 BD/WE31-P11. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When this card attacks, this card gets +X power until end of turn. X is equal to 500 multiplied by the number of colors of your characters on stage. 【AUTO】 Encore [Put a character from your hand into your waiting room] (When this card is put into your waiting room from the stage, you may pay the cost. If you do, return this card to its previous stage position as 【REST】)