Meteorologist + Ultimate Weather Abuser
I had an interesting idea for a new pokemon.
In order for a pokemon to set-up rain, hail, sand, or sun without being locked into using a all four moves in their movepools, they would need one of two things. First, it could be an ability the pokemon has. Second, it could be a single move that can create the weather. My idea runs off the first.
Think about this:
What if there was a pokemon who created weather when it uses a certain move? Even more interesting, if it could use multiple moves and create multiple types of weather. An ability, that when using a certain attribute move would create a corresponding form of weather.
When it uses flamethrower, the sun shines brightly. When the pokemon uses surf, it begins raining. When the pokemon earthquakes, sand is whipped up. When the pokemon uses blizzard, it doesn't stop. Finally, when it uses a normal attribute move, the weather fades.
This could lead to all kinds of possibilities.
1. A weather controller. This could be a set designed to negate sandstream from tyrannitar or hippowdon using moves which are super-effective. This not only sets up weather, but it sets up the team as well.
2. A choice sweeper. Once a certain move is used, such as flamethrower, the corresponding sunny day increases the power. This is the same for rain. This could make choice band/specs/scarf very viable. The first attack strengthens the second one.
I really like this idea, and it would create a more weather-based metagame, and give all sorts of weather utility to any team. This could be used to take away sand-veil from garchomp while hitting it with a super-effective attack.
Gravity Unit
Since my first choice overlaps, I think I can count it as one. If not, ignore this.