Smack Down

This move can hit a target using Bounce, Fly, or Sky Drop, or is under the effect of Sky Drop. If this move hits a target under the effect of Bounce, Fly, Magnet Rise, or Telekinesis, the effect ends. If the target is a Flying type that has not used Roost this turn or a Pokémon with the Levitate Ability, it loses its immunity to Ground-type attacks and the Arena Trap Ability as long as it remains active. During the effect, Magnet Rise fails for the target and Telekinesis fails against the target.

“The user throws a stone or similar projectile to attack the target. If the target is in the air, it will be knocked down to the ground.”

In-game text, Scarlet & Violet