While yes, that is true, the Energy requirement for Swanna's attack is far too high
You can cast it from the top of your library with Nalia de'Arnise, and you get double triggers from Rin and Seri, Inseparable when you cast it
If you're counting on Winged Sliver or Muscle Sliver or any other boost to carry you through combat, then a removal spell on the key ability can destroy your entire team, and even with Hibernation Sliver available such a blow is often crippling
Sources: Pokmon Center (1, 2), PokBeach (1, 2) Created by Satoshi Taijiri, Ken Sugimori, Junichi Masuda Video Game(s) Pokemon Red and Blue, Pokemon Yellow, Pokemon Gold and Silver, Pokmon Crystal, Pokemon Ruby and Sapphire, Pokemon Sapphire, Pokemon Diamond and Pearl, Pokemon Platinum, Pokemon Black and White, Pokemon Black and White 2, Pokemon X and Y, Pokemon Sun and Moon, Pokemon Sword and Shield, Pokemon Scarlet and Violet, Pokemon Winds and Waves, Pokemon Legends Arceus, Pokemon Legends Z-A First Film Pokemon: The First Movie Latest Film Pokmon the Movie: Secrets of the Jungle First TV Show Pokmon First Episode Air Date April 1, 1997 Pokmon is a Japanese multimedia franchise created by Satoshi Tajiri and Ken Sugimori, launched by Nintendo, Game Freak, and Creatures in 1996
