"Power of the Mask" Darkness

【AUTO】 [(1)] At the beginning of your opponent's attack phase, you may pay the cost. If you do, choose one of your 《Adventurer》 or 《Magic》 characters and this card, and exchange them as 【STAND】. 【AUTO】 During your opponent's turn, when the damage you received is not canceled, if this card is on your center stage, look at the top card of your deck, and put it on the top of your deck or into your waiting room. 【AUTO】 Change [Put this card into your waiting room] At the beginning of your climax phase, you may pay the cost. If you do, choose a card named ""Duke of Hell" Vanir" in your waiting room, and put it on the stage position that this card was on.

Flavor Text: Boy, listen well! With my power― What should I do, Kazuma?! My body's been taken over!