If a Pokémon is holding a Psychic Seed while the field is Psychic Terrain, it consumes the Psychic Seed and its Special Defense is increased by one stage (even if it is not otherwise affected by the terrain).
If a Terrain Extender is held when Psychic Terrain is used, the terrain will last 8 turns instead of 5.
When a Pokémon with the Ability Psychic Surge enters battle, Psychic Terrain is automatically created which lasts for 5 turns (8 if the Pokémon holds a Terrain Extender).
Upon successfully doing damage, Genesis Supernova creates Psychic Terrain on the field which lasts for 5 turns.
If powered up by a Psychium Z into Z-Psychic Terrain, the user's Special Attack stat rises by one stage.