answered question
There isn't one...As long as your team can get the advantage over the type you should be ok.   Example:       Fire------Garchomp(Dig/Crunch/Dragon Claw/Rock Climb)   Dragonite(Surf, Waterfall,Dragon Rush,Draco Meteor)     Water------Luxray(Thunderbolt/Crunch/Strength/Charge Beam)   Meganium(Petal Dance/Earthquake/Frenzy Plant/Solarbeam)     Grass------Infernape(Close Combat/Cut/Fire Blast/Flare Blitz)   Staraptor (Defog*/Fly/Aerial Ace/Close Combat)   Well, you get the idea.   … Read more
answered
To beat the elite four :   Aaron: He specialises in bug types, kill his Yanmega (the first pokemon he sends out)quickly with a good fire attack.Beware Yanmega has Speed Boost as an ability, it raises Yanmega's speed each turn. I would advise trying to kill his heracross in  hit, with a strong flying type … Read more