My Shadow Spider Assassin Build

Shadow Spider -
(A/Any)
Shadow Prison, Black Spider Strike, Twisting Fangs, Disrupting Dagger, Shadow Of Haste, Dark Escape, Shadows Refuge, and Res Sig.

Dagger mastery 11+1+2
Deadly Arts 5+1
Shadow Arts 7+1
Critical Strikes 11+2

-Cast Shadow of Haste at a safe distance from battle before charging in and unleashing Shadow Prison, Black Spider Strike, Twisting Fangs, and if still not under attack wait to Disrupt self heal with Disrupting dagger.

-When under heavy attack cancel out Shadow of Haste with Dark escape to flee from battle and heal before recasting shadow of haste and charging into battle again.

-Build is meant for Gvg solo ganking with the exception that you have either caltrops or feigned neutrality.

Enjoy my new assassin Build

Shadow Prison is a waste of an Elite, imo.

Shadow prison is useful no doubt, but not very dependable. Its recharge is just way too long. I would prefer something like Leaping Mantis Sting if your goal is to snare a foe. Or just plain don't take aggro, rush to the nearest "soft" target you see and wipe them out.

Shadow Prison is mainly used for the hex to trigger Black spider strike, to shadow step next to foe for a supprise attack, and avoid taking extra damage when solo ganking npcs.

I tested the build during GVG and the build worked out extremely well. Rarely die when used correctly, takes out many npcs, and great in assisting front line spikes when needed. During RA runs build is great for killing people who leaves monks healing range or killing monks if you are able to disrupt their heal and have someone assist with 20-30% damage.