サマーバケーション ダクネス is a Weiß Schwarz card from 角川スニーカー文庫 Vol.2 Sks/W123-018. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
【ACT】 [Send 1 of your other characters on stage to Waiting Room, Send this to Waiting Room] Look at up to 4 cards from the top of your deck, choose up to 1 《Sneaker Bunko》 or 《Adventurer》 or 《Worries》 character from among them, show it to your opponent, add it to hand, and send the rest to Waiting Room.
This card was printed in Japanese only; the English text above is an unofficial community translation.