Dont use Blade Dash as initiation, it works fine during tight team fights to get some small dmg output but never skill this ability up because thats not where his strength lies. Blade Dash is a finisher not an initiaton it is also an AOE dodge in certain scenarios.

Why I call him Vengeful spirit with a twist is cuz of the Phase prism skillshot, you switch place with ur target, like a small pull and u follow up with burst dmg from Twin blades, its all about the attack speed to get that shield overload up, get follow through to follow up on each time you use Twin blades for 40% extra DMG on next basic attack.

As your heroic you should go for Suppression Pulse as it has the potential to blind targets before a teamfight and dish out a small amount off dmg, although its better to use it to clean up after a team fight or scout the map with it.

It's a continuous work in progress, feel free to try the builds out and switch around the talents to fit yours and your teams playstyle