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| Arena Trap
Arena Trap (Japanese: ありじごく Antlion) is an Ability introduced in Generation III. Three Pokémon have this Ability, all of which are of the Ground-type.
Arena Trap prevents fleeing or switching out as long as the user remains in battle.
Pokémon rendered immune to Ground-type attacks are immune to Arena Trap. This includes Flying-type Pokémon, Pokémon with Levitate, and Pokémon affected by Magnet Rise or Telekinesis. Likewise, if a Pokémon normally immune to Ground-type attacks is made vulnerable, they will be affected; if the Pokémon is under the effect of Gravity, Smack Down, a move that negates Levitate (such as Gastro Acid or Simple Beam), type change effects that remove Flying-type (such as Soak, Conversion, Camouflage, or Color Change), or a held Iron Ball, it will be unable to escape.
Using Baton Pass or U-turn, or holding a Shed Shell will allow the Pokémon to switch out under all circumstances. Run Away will circumvent its effect in a wild Pokémon battle only.
Outside of battle
From Pokémon Emerald onwards, if a Pokémon with Arena Trap is leading the party, then the wild Pokémon encounter rate is increased to 200%. It shares this trait with Illuminate.
Pokémon with Arena Trap
In the anime
In other languages