Empowered Mommentum
First off, dont feat this till you got everything full It is a interesting AA and this is only reason why Im describing it to you.
It adds a Slashing DMG proc to your Stun proc from Momentum, when you double tab foward for 5 secs for me it procs about 180 slashing dmg and it, is AOE like 90º 3mt cone(I didnt test these values just a rough estimate). the Stun proc can trigger more then once on those 5 seconds especially if you are hitting mutiple targes. As it is Aoe, It will proc the aoe each time any of your targets procs the stun.
Note that is Gets buffed by ''75% spell dmg'' vom stack, but unfortunately It dosent crit.