Originally Posted by Pokemonpal7
Touché. Then get rid of Draco Meteor ^_^ because I reckon it's probably better to only have one move of each type in a set, unless one is a status move.
That is typically the right thing to do, however Dragon is a special case. It hits every single type in the game except for Steel. Not a lot of things can stand up to a Draco meteor, Dragon pulse is the "clean up" move. Remaining two attacks are to cover Steel types. Dark just isn't a good compliment to Dragon. This is why Garchomp got banned because of his super sexy Dual Stab ( that and other things)