Metagross/Hydreigon/Kommo-o Double Dragon

Synergy

Ninetales-Alola's Snow Warning enables both Aurora Veil for team-wide bulk and boosted Blizzard/Freeze-Dry accuracy, while Prankster Whimsicott layers Tailwind and Encore as a second speed-control and disruption tool. Mega Metagross and Kommo-o form a dual priority/setup offensive core built around Bullet Punch and Clangorous Soul, with Choice Scarf Hydreigon and Flash Fire Ceruledge providing fast cleanup once the support pieces have done their job.

Win Conditions

Aurora Veil or Tailwind buys the setup turn that Kommo-o needs for Clangorous Soul, after which boosted Clanging Scales and Aura Sphere tear through the opposing back line. Mega Metagross backs this up with first-turn priority Bullet Punch and Meteor Mash to break screens and pick off faster threats, while Choice Scarf Hydreigon revenge kills anything left standing with Draco Meteor or Dark Pulse.

Lead Options

Kommo-o + Ninetales-Alola, Metagross + Whimsicott

Threats

Trick Room teams that invert the speed order against this team's Tailwind and Choice Scarf plans, and heavy special attackers or confusion/crit variance that can punish Hydreigon's thin bulk once Aurora Veil expires.