Edison Rulings
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Proof of Powerlessness

Proof of Powerlessness card art

Edison Card Text

Activate only while you control a face-up Level 7 or higher monster. Destroy all face-up Level 5 or lower monsters your opponent controls. Monsters you control can't attack this turn.
No targeting
No Damage Step effect
Banlist • Unlimited

Interactions

Can Proof of Powerlessness be activated after Machina Fortress declares an attack?!
Proof of PowerlessnessMachina Fortress
Machina Fortress has already declared an attack.
No. Proof of Powerlessness must be activated before the attack is declared; it cannot be used after the declaration.

Rulings

edisonformat.net Activate only while you control a face-up Level 7 or higher monster. Destroy all face-up Level 5 or lower monsters your opponent controls. Monsters you control can't attack this turn. ●Your Level 7+ monster only needs to be face-up to activate this card. The effect will resolve even if it is flipped face-down / leaves the field. ●You can activate this card on your opponent's turn, since you won't be declaring attacks that turn. ●Monsters like Elemental Hero Wildheart can still attack the turn you activate “Proof of Powerlessness.” edisonformat.com No edisonformat.com ruling available.