>>29144656I would go with something... better than Ultimate.
>Firestorm Unleashes a powerful blast of fire so hot and furious that it changes the weather entirely. Pokemon caught in the Firestorm suffer severe burns that do more damage in time. In this weather, Kyurem-U replaces its primary type with Fire and his fire moves are boosted by the weather.
>Icestorm An intense storm of water and ice, striking all those caught in its wake under a deluge of super-cold winds and rain. Pokemon caught in this weather are slowly frostbitten, losing speed and gradually freezing solid.
Kyurem-U replaces its first type to Ice and its Ice type attacks gain strength in this weather.
>ThunderstormKyurem calls upon a tremendous thunderstorm, unleashing fierce winds and lightning upon the area around it. Pokemon caught in this storm have a chance of being struck by lightning whenever they perform aerial type moves.
Kyurem-U replaces its primary type with Electric, and its Electric moves are strengthened by the storm.
