abuse weather teams.
Roster
AbilityHospitality
NatureRelaxed
EVs32 HP / 4 Def / 30 SpD
Moves
Matcha GotchaRage PowderLife DewProtect
AbilityDrizzle
NatureModest
EVs32 HP / 1 Def / 5 SpA / 17 SpD / 11 Spe
Moves
Weather BallHurricaneTailwindWide Guard
AbilityPrankster
NatureCalm
EVs32 HP / 20 Def / 14 SpD
Moves
ReflectParting ShotLight ScreenFoul Play
AbilityStamina
NatureModest
EVs32 HP / 1 SpA / 29 SpD / 4 Spe
Moves
Dragon PulseFlash CannonProtectElectro Shot
AbilityTorrent
NatureAdamant
EVs18 HP / 29 Atk / 19 Spe
Moves
ProtectWave CrashIce PunchEarthquake
AbilityClear Body
NatureJolly
EVs14 HP / 27 Atk / 25 Spe
Moves
ProtectIron HeadPsychic FangsBody Press
Strategy
sweep with your megas after getting screens and weather up
Lead Options
leads are Pelliper and either mega if no weather control, if there is weather control go with grimmsnarl and either mega or archaludon, common pokemon in the back are archaludon, sinistcha and grimmsnarl, pelliper and one mega is a neccesary on each team.
Win Conditions
sweep with swampert when no weather control, use metagross to break screens/
Threats & Bad Matchups
big threats are other weather teams but to stop them lead with grimmsnarl and parting shot into pelliper when the opposing weather goes in.