Which 6 mons do I need to bring and what role do they play

Opponent		My drafts

Metagross		Gardevoir
Rotom-W			Magnezone
Landorus-T		Garchomp
Goodra			Greninja
Krookodile		Heracross
Heliolisk		Roserade
Aromatisse		Cofagrigus
Delphox			Typhlosion
Tangrowth		Togetic
Armaldo			Lilligant
Miltank			Flareon
Samurott		Quagsire