You can now get the Set from Treasure of the Distinguished Conqueror:

http://www.dota2.com/store/itemdetails/11424?r=ca

The Vespertine Guard set for Abaddon has been in the making for some time but has finally been able to see the end of the tunnel. We hope you like it as we thought of approaching him differently compared to other sets for this hero.

Concept & Loading Screen Art: Fishie
Modeling & Texture: Vayne4800 (Twitter @Vayne4800)
Texture Finalization: Stefco