同級生 寿みなみ is a Weiß Schwarz card from 【推しの子】Vol.3 OSK/S133-087. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 At the start of your CX Phase, choose 1 of your 《Show Business》 characters, this turn, it gets +1500 power. 【AUTO】 When a CX with a Book Trigger is placed in your CX Area, choose up to 2 of your characters, this turn, they gain the following ability, "【AUTO】 When this card's card's battle opponent is Reversed, you may send that character to the bottom of your opponent's deck."
This card was printed in Japanese only; the English text above is an unofficial community translation.