>Electric Terrain.
>Prevents grounded Pokemon from being affected by Sleep.
>Increases the damage done by Electric-type moves used by affected Pokémon by 50%.
>Psychic Terrain.
>Prevents grounded Pokemon from being hit by Priority moves.
>Increases the damage done by Psychic-type moves used by affected Pokémon by 50%.
>Fire Terrain.
>???
>Increases the damage done by Fire-type moves used by affected Pokémon by 50%.
>Ghost Terrain.
>???
>Increases the damage done by Ghost-type moves used by affected Pokémon by 50%.
What would be the best case scenario for Ghost and Fire Terrains in terms of their additional effect? What would be fitting, thematically speaking? Electric Terrain keeps things away with jolts of electricity, and Psychic Terrain stops priority likely because it lets Pokemon predict and avoid the moves.