Extremespeed
Thunder
Hurricane
Superpower
I live by this moveset on my Mild h/a Dragonite. I guess running a rain team I'm not short on ice moves so it's a nice switch. Does a lot of damage to Blissey, Ferrothorn, Tyranitar with superpower and can take out pretty much Slowbro, tanky Venusaur, Tangrowth with thunder and hurricane easily. By far the best type of Dragonite in my opinion but depends on type of team you run.