hail: snowy weather
sunny day: clear weather
rain dance: rainy weather
sandstorm: a sandstorm type weather(new weather effect caused by the new system)
desolate land: clear weather but every now again, the land would be set on fire and water would dry up.
primordial sea: thunderstorm, but every now again, the water would rise and fire would be put out, and lava would turn to obsidian as well.
delta stream: windy weather would be caused, and has a chance of spawning in a tornado.
terrain effects:
electric terrain: redstone/light blue or yellow electric particles would be on the ground.
psychic terrain: enchantment particles/magenta particles would be on the ground.
grassy terrain: different shades of green particles would be on the ground with the ground temporarily turning into a flower forest type environment.
and misty terrain: a foggy type/pink particle effects would be on the ground.
i know this would take a while for it to be coded and everything, but i feel as if it could make the world of pixelmon more realistic.
p.s. due to this new battle weather system being a feature in the mod, it would make the extreme weather mod incompatible with pixelmon.