Gen 6 and Gen 7
[email protected] Life Orb/Choice Scarf/ Choice Band
CHoice Scarf is for more speed to KO but is risky because it locks you into one move (I suggest to lock yourself into earthquake for the coverage). CHoice Band is to hit like a truck and KO everything (Choice band makes physical attacks hit hard but locks you into a move, Again, I suggest earthquake). Life Orb just gives more attacks to moves at the cost of health.
Life Orb is better in my opinion.
Earthquake-coverage(hits electric types, rock, steel)
iron head-hits fairy types and ice types
dragon rush/ice punch-(ice punch hits dragon types and gets coverage) (dragon rush hits dragon types, stab, but no coverage)
Dragon Dance/Extremespeed-dragon dance for stat boost and extreme speed for priority
252 attack, 252 speed, 2 defense, 4 special defense
Let me explain how to use this:
If you have fake out support get some chip damage and switch out. Go into this dragonite and set up 1 dragon dance(set up 2 if you're greedy) and depending the type of the Pokemon you're up against, proceed to sweep the team and KO. Multiscale makes you a bit tanky if you think about it (you'll be able to survive an ice type attack with 4 times weakness!)