Threat list:

DD Water types

DD Gyarados
DD Kingdra

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Special offensive Water types
Suicune
Starmie
RD Kingdra

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Explosion Azelf
Explosion Metagross
Explosion Snorlax


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Mixed Flygon
Mixed Dragonite
Mixed Infernape

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Choice Band Dragons
Choice Band Scizor
Choice Band Infernape

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Life orb / Stealth rock Explosion Heatran
Mixed Infernape
Machamp
Gallade

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Offensive Substitute Ghost-types (Rotom and Gengar)
Choice scarf and fast Electrics Rotom, Jolteon and Zapdos

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Calm Mind Cresselia
Calm Mind Jirachi Wish
Calm Mind Raikou
Calm Mind Clefable
Calm Mind rest Suicune

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Defensive Grass-types have something to deal with leech seed spam and possibly Toxic Spikes

Roserade
Celebi
Shaymin
Venusaur

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Utility mons

Blissey
Clefable


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Trick Pokemon

Choice Band / Scarf Azelf
Scarf Jirachi
Scarf Rotom-A

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Lategame SD Pokemon

Swords Dance Lucario
Swords Dance Scizor

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Dragon Dance Tyranitar
Rock Polish Rhyperior
Choice scarf Flygon
Life Orb Weavile
Substitute Breloom

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Taunt Rock / Grounds

Aerodactyl
Gliscor

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Offensive trick room

Bronzong
Choice Band / Mixed Tyranitar
Choice band Aggron
Mixed Dragonite
Slowbro / Slowking