Duplicate Key to the Emiya Household is a Weiß Schwarz card from 劇場版「Fate/stay night [Heaven’s Feel]」Vol.2 FS/S77-038. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Card type
Event
Side
Schwarz
Color
Green
Level
1
Cost
0
Neo-Standard
Fate
Card Text
【CXCOMBO】 Choose 1 level X or lower 《Master》 or 《Servant》 character in your waiting room, and return it to your hand. X is equal to the number of ""Important Person" and "Something to Protect"" in your waiting room.