This protects Pokémon on the ground from priority moves and powers up Psychic-type moves for five turns.
Effect
For five turns, protects all Pokémon on the ground (i.e., not Flying, Levitating, holding an Air Balloon or under the effects of Magnet Rise or Telekinesis) from moves with increased priority (including moves affected by abilities such as Gale Wings or Prankster). Moves that affect all Pokémon on the field (except for Flower Shield, Perish Song, and Rototiller) and moves that affect all foes cannot be blocked, even if they somehow gain increased priority. Psychic Terrain also strengthens their Psychic moves to 1.3× their power.
If the user is holding Terrain Extender, this effect lasts for eight turns instead of five.
