Sandstorms deal small amounts of damage each turn to most pokmon except Rock, Ground, and Steel types
Any way you can remove a permanent will work, even other auras like Sheltered by Ghosts
Sure, its not an attack for every situation and requires a lot of setup, but if used at the right time with cards that get Dreppy out quickly, you can catch your opponent off-guard and maybe even take multiple Prize cards
Card Set(s) Offline Regional Participation Pack 2025 Vol type and you have no other [Cavendish] Characters, set up to 2 of your DON
Exalted Sunborn Showcase, M0358 A White Creature card, Exalted Sunborn is a good start to our list
Once the ability resolves, the bonus applied by that instance of the ability doesn't change even if the number of permanent cards in your graveyard changes