Gravity

For five turns (including this one), all immunities to Ground moves are disabled. For the duration of this effect, the evasion of every Pokémon on the field is lowered by two stages. Cancels the effects of Bounce, Fly, and Sky Drop.

Specifically, Flying Pokémon and those with Levitate or that have used Magnet Rise are no longer immune to Ground attacks, Arena Trap, Spikes, or Toxic Spikes.

Bounce, Fly, Sky Drop, High Jump Kick, Jump Kick, and Splash cannot be used while this move is in effect.