Advanced format ruling
Mind Crush
Card effect (current official text)Declare 1 card name; if that card is in your opponent's hand, they must discard all copies of it, otherwise you discard 1 random card.
Current rulings for this card are maintained by Konami.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Advanced forum — sourced change requests get reviewed.