Advanced format ruling
Thousand-Eyes Jellyfish
Card effect (current official text)This card cannot be Normal Summoned or Set. This card cannot be Special Summoned except by Tributing 1 "Ocean's Keeper". Your opponent must play with their hand revealed.
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.