Edison format ruling
Curse of Royal

Card effect (current official text)Negate the activation and the effect of a Spell or Trap Card that includes the effect of destroying 1 Spell or Trap Card and destroy it.
Rulings
- You can only activate Curse of Royal as a chain to a Spell or Trap Card that would destroy 1 (and ONLY 1) Spell or Trap Card.
- You cannot use Curse of Royal against Heavy Storm or Harpie’s Feather Duster.
Rulings data courtesy of Format Library — formatlibrary.com. Spotted an inaccuracy? Flag it in the Edison forum — sourced change requests get reviewed.