Boooo!! is a Weiß Schwarz card from らき☆すた LS/W05-096. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
Look up to the top X card of your Deck, choose up to 2 card, add it to Hand. Place the remaining cards into Waiting Room. X is equals to the number of your 《オタク》 Characters.
This card was printed in Japanese only; the English text above is an unofficial community translation.