Delphox is a fast and powerful pokemon which matches well with its Life Orb and Magic Guard set, giving it a boost without losing HP. After breaking Jynx's Sash using another pokemon, send Delphox in, as long as a pokemon is already asleep, to set up calm mind. Pryce will switch to Walrein, as it is the only option that can tank Delphox's initial hits. But Delphox can continue to setup calm minds as Walrein's toxic can't affect Delphox due to Magic Guard. With a minimum of two calm minds, you can one shot Walrein with just Grass Knot. After that just use Flamethrower for everything else and you will burn Pryce with no mercy.
