デート服 フェルン is a Weiß Schwarz card from 葬送のフリーレン Vol.2 SFN/S136-069. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When you use this card's BACKUP, reveal the top card of your deck. If that card is a 《Adventurer》 or 《Magic》 character or {New Red 1/1 Event - 073}, add it to hand and discard 1 card. 【ACT】 BACKUP +2500 [(1) Reveal this from your hand, Send this to the bottom your deck]
This card was printed in Japanese only; the English text above is an unofficial community translation.