柚希と主従契約 is a Weiß Schwarz card from 角川スニーカー文庫 Sst/W62-056. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When this card is placed on Stage from Hand, during this turn, this card gets +X Power. X is equal to the number of your 《スニーカー文庫》 or 《魔法》 Character ×500. 【AUTO】 [Place this card into Waiting Room] When your other 《スニーカー文庫》 or 《魔法》 Character is being Front Attacked, you may pay the cost. If you did, choose 1 of your Character in battle, during this turn, it gets +3000 Power.
This card was printed in Japanese only; the English text above is an unofficial community translation.