Tengu format ruling
Gryphon's Feather Duster
Card effect (current official text)Destroy all Spell and Trap Cards on your side of the field. Increase your Life Points by the number of destroyed cards x 500 points.
Rulings
- Gryphon's Feather Duster does not destroy itself.
- When you destroy multiple cards at the same time with Gryphon's Feather Duster, you gain the Life Points as 1 lump sum, so your Fire Princess will only do 500 damage.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Tengu forum — sourced change requests get reviewed.