Climate Change
If a terrain is on the field, nullify the current effects, then apply as necessary:
Electric Terrain becomes Null Terrain: Yawn puts a Pokemon to sleep the same turn it is used, Rest lasts 4 turns. Power of electric moves reduced by 30 %.
Grassy Terrain becomes Barren Terrain: The terrain damages the HP of each affected grounded Pokémon by 1/16 of its maximum HP. The power of Bulldoze, Earthquake, and Magnitude is doubled. Power of grass moves reduced by 30 %.
Misty Terrain becomes Draconic Terrain: The effect of status conditions is doubled, including duration. Dragon-type moves deal double damage.
Psychic Terrain becomes Shadowy Terrain: Priority moves deal double damage Psychic type moves deal 30 % less damage.
If a move would benefit from terrain, it now applies a negative modifier.
