Cyclone

Cyclone (Japanese: たいふう  Typhoon) is a Flying-type Status move created by for Generation VI.

Effect
Cyclone causes a powerful cyclone to blow for five turns. This can occur simultaneously with rain, hail, or a sandstorm, but not with strong sunlight or fog. While Cyclone is in effect, the base power of Flying-type moves increases by 50% and all Pokémon's accuracy is reduced by 1 stage.

After each Pokémon's attack, there is a chance it will be forced to switch out, depending on its weight.

Pokémon in the semi-invulnerable stages of Dig, Dive, and Shadow Force will not be forced to switch. During the semi-invulnerable stage of Free Fall, if the user of Free Fall is forced to switch, its target will also be forced to switch regardless of its weight.

Cyclone also amplifies the effects of hail and sandstorms, doubling the damage dealt by each. If it occurs simultaneously with heavy rain or over water, it will also deal damage to all non-Water-type Pokémon equal to ⅛ of their maximum HP each turn.