crYOGONAL because it is an incredible pokemon, with great speed, special defense, special atatck, along with GREAT movepool. It has moves like Ice beam, SolarBeam, and Sheer cold. Its ability is leviate. A good moveset is Toxic, Acid armor, Recover, and Ice beam.
swagger to confuse and get a greater chance to make enemy hurt itself
Double Team to protect it if the enemy doesn't get hurt by confusion
Toxic to make the enemy get hurt by confusion and toxic
Explosion if your about to die
Ice beam to kill dragons and STAB
Flash Cannon to kill ground and rock types
Hyper Beam to finish off an enemy
Substitute/protect to make your opponent waste an attack
Ice Beam/Blizzard to STAB
Rest/ sharpen Rest to make another substitute or Sharpen to make explosion better
Explosion/ Hail Explosion to make a last ditch effort to kill your opponent or Hail to make blizzard have better accuracy.
The movesets are in my opinion.