Confirming the Operation, Shalltear is a Weiß Schwarz card from オーバーロード Vol.2 OVL/S99-009. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Card type
Character
Side
Schwarz
Color
Yellow
Level
0
Cost
0
Power
1000
Soul
1
Traits
Grotesque Race, Nazarick
Neo-Standard
Nazarick: Tomb of the Undead
Card Text
【CONT】 All of your other 《Grotesque Race》 or 《Nazarick》 characters get +500 power.
【AUTO】 [Put 1 climax from your hand into your waiting room] When this card is placed on the stage from your hand, you may pay the cost. If you do, choose 1 《Grotesque Race》 or 《Nazarick》 character in your waiting room, and return it to your hand.