Tengu format ruling
Royal Tribute
Card effect (current official text)If you control "Necrovalley": Both players discard any monsters in their hands.
Rulings
This card can only be activated when Necrovalley is on your side of the field. Both players discard all Monster Cards in their hands to the GY.
- Both players must reveal their hands to the opponent when Royal Tribute resolves.
- Necrovalley only needs to be face-up on the field when this card is activated.
- This effect resolves successfully even if Necrovalley leaves the field in the Chain.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.