Dark Eldar Coven Formations, w/ Eldar Allies for Null deploy

Primary detachment:

Grotesquerie:

3 grotesques, raider, night shields, dark lance
4 grotesques, raider, night shields, dark lance w/ haemy

Scalpel squadron formation:

5 wracks, ossifactor, venom, dual cannons
5 wracks, ossifactor, venom, dual cannons

Scalpel squadron formation:

5 wracks, ossifactor, venom dual cannons
5 wracks, ossifactor, venom dual cannons

Dark artisan formation:

Haemy, webway portal
Talos
Cronos

Dark artisan formation:

Haemy, webway portal
Talos
Cronos

Eldar allied detachment:

Autarch

Troops:
5 dire avengers

Heavy support:
Wraithknight

Yuo are lacking heamy from your Grotesquerie?

And the one lance and extra grot might better be bikes (and gear) for your Eldar section instead of Avengers.

Under grotesquerie the haemy is listed with te squad of 4...

I'm really just bringing the Eldar for the wraithknight an reserve manipulation. Paying the autarch tax.

I agree with Vasara, I'd drop the footslogging Dire Avengers and Autarch in favour of a Jetbiked Autarch with a Windrider squad.