Mind Crush

Edison Card Text
① Declare 1 card name; if it is in your opponent's hand, they discard all copies of it, otherwise you discard 1 random card.
No targeting
No Damage Step effect
Banlist • Limited
Rulings
edisonformat.net
● You can't activate this card if you don't have a card in your own hand.
Historically, at SJC Edison, the following rulings applied:
● If your opponent discarded at least 1 card, they don't reveal their hand.
● If they did not discard anything, they must reveal their hand (even if they declared a limited card which is in their GY).
Please note that not all Edison Format Tournaments use Edison Format rulings.
Ask your Head Judge if they are using the historically accurate ruling.
edisonformat.com
(1) Declare 1 card name. If that card is in your opponent's hand, they must discard all copies of it from their hand. If it is not, you randomly discard 1 card.
You CANNOT activate "Mind Crush" while either player has no cards in hand.
This effect resolves even if you no longer have any cards in hand.
Declare a card's original (printed) name at activation.
If the opponent discards the named card, they do not reveal their hand to verify [REF]].
If the opponent doesn't discard the named card, they reveal their hand to verify UNLESS:
1 copy of a named Limited Card is accounted for (field / Graveyard / banished) [REF]].
2 copies of a named Semi-Limited Card are accounted for (field / Graveyard / banished) [REF]].
3 copies of a named Unlimited Card are accounted for (field / Graveyard / banished) [REF]].