https://www.youtube.com/watch?v=436DrQGbgV8

Showcase is done with around 5 div worth of gear, merc has only haste Aura.

Relic of the pact is a good build to farm invitations, other mechanics are not so good.

Starting gear is the Wand for 60c, Rathpith 15c and Dissolution of the Flesh for 15c. So its very cheap at the moment. Can be leveled from level 38. Its very different in playstyle compared to other builds, i think you either will like it like me, or hate it.

I have tried to export it: https://pobb.in/Q2EUv4tVLfZ3

If you want more details i can gladly explain how it works. There is also old video from CaptainLance on it.