Tengu format ruling
Zero Gardna
Card effect (current official text)You can Tribute this card to activate its effect. If you do, monsters you control cannot be destroyed by battle, and you take no Battle Damage, during this turn. This effect can be activated during either player's turn.
Rulings
- Tributing Zero Gardna is a cost to activate the effect.
- You cannot activate this card during the Damage Step.
- Monsters Summoned to your side of the field after the activation of Zero Gardna's effect will also be protected by it.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.