宵闇の妖怪 ルーミア

CONT - This card can be played without meeting Color requirement.

AUTO - (2) When this is placed on stage from hand, you may pay cost. If you do, choose 1 of the following 2 effects and resolve it,

a) "Your opponent sends all of their Stock to their deck and shuffles their deck, then puts an equal number of cards from the top of their deck into Stock."

b) "Your opponent chooses 1 CX from their Waiting Room, and shuffles all other cards from their Waiting Room into their deck."