不思議な後輩 静流 is a Weiß Schwarz card from Key 20th Anniversary Krw/W78-126. 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 +1500 Power. 【AUTO】 [(2)] When this card is placed into Waiting Room from Stage, you may pay the cost. If you did, choose 1 《Anniversary》 or Character with 「ルチア」 or 「静流」 in its name from your Waiting Room, return it to Hand.
This card was printed in Japanese only; the English text above is an unofficial community translation.