冷たい視線 フェルン is a Weiß Schwarz card from 葬送のフリーレン 新装版 SFN/S128-086. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【AUTO】 When you use this card's "Backup", put X cards from the bottom of your opponent's deck into their waiting room. X is equal to the number of 《Adventurer》 or 《Magic》 characters you have. 【ACT】 【COUNTER】 Backup 2000, Level 1 [(1) Put this card from your hand into your waiting room] (Choose 1 of your characters that is being frontal attacked, and that character gets +2000 power until end of turn)