竜王の顎 is a Weiß Schwarz card from 禁書目録＆超電磁砲 ID/W10-021. Compare listings from Singapore Weiß Schwarz sellers on CardJio, then jio them on WhatsApp.
COUNTER You may choose 1 of your Characters, move to Waiting Room. If you do, choose 1 of your Characters, during this turn, it gets +2 Level, +2000 Power.
This card was printed in Japanese only; the English text above is an unofficial community translation.