Quaquaval ex has two very interesting attacks that create potential for this deck. Its first attack, Exciting Dance, does 60 damage and allows Quaquaval ex to duck away to the Bench (while also making your opponent’s Active Pokémon move to the Bench, too). These “hit and run” attacks have often been strong in the Pokémon TCG; they allow players to move Pokémon with great Abilities to the Active Spot without having to worry about their attack strength. One such Pokémon in the Standard format is Klefki. Its Mischievous Lock Ability shuts off the Abilities of all other Basic Pokémon, like those of Comfey, Lumineon V, Squawkabilly ex, and Genesect V. Klefki can do only 10 damage on its own and Quaquaval ex’s attack does 60 damage, but ending the turn with Klefki and Mischievous Lock active is quite advantageous.
read the entire deck description here: https://www.pokemon.com/us/strategy/pokemon-tcg-scarlet-violet-paldea-evolved-triple-play