I used a trick so i can fil all the mods, thats why [Preparation], fleeting, [Streamline], [Vitality] and fiber are not maxed.

You dont need 100% energy filled from [Preparation] when you spawn shadow, it is just so you dont have 0 energy from the start and to be forced to wait till you find energy orbs or energize procs so you can use your first ability to cc enemies.

The build is focused mainly for his 100% damage vulnerability on his third ability, added a bit of range for his 1 crowd control and maximum 175% efficiency.

Used arcane energize for energy obvious and arcane strike for his melle attack speed, but you can replace strike with whatever you want :),arcane grace, [Guardian], avenger, [Fury] could also work very well, depends on your needs.