Goriom, your link is not to your build.

Why take Shadowplay for GHA? You pick up Toxic Shock which is sub-par because you can't poison. The only other useful skill is Free Runner for the AGI buff.

If you take Auramancy instead you get Thwart which will give you the best DPS buff of all the trees. You get a better mana regen than play dead. You get a group buff. And you already have wings which you can use on boss 2 and 3.

I know you can run GHA with other builds, what we want to talk about is what is most efficient and creates synergy with the group. Let us know why you take certain skills and how they help more than what I posted.