voodoo pimp
marco pimp
Best team styles in the current metagame are probably rain and goodstuff (that is, Pokémon that are all good on their own and work well together without relying on any specific strategy or field effect). But really, any well-built team can succeed if you know what you're going - team style is second to player knowledge and prediction. So just go with what you like using, because you'll probably do better with that.
And yes, all Pokémon are allowed except for mascot and event-only legendaries - same rules as Battle Subway/random Wi-Fi except for Dark Void being banned.
And yes, all Pokémon are allowed except for mascot and event-only legendaries - same rules as Battle Subway/random Wi-Fi except for Dark Void being banned.