Tengu format ruling
Reversal Quiz
Card effect (current official text)Send all cards in your hand and on your side of the field to the Graveyard. Call the type of card (Spell, Trap, or Monster) on top of your Deck. If you call it right, exchange your current Life Points with your opponent's current ones.
Rulings
- Sending all cards in the hand and on the field to the GY is a cost. If there are no cards in your hand or on the field you cannot activate this card. You must have a card either in your hand or on the field to activate this card.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.