Okay so to give you a picture of what I am bringing here's my list so far.
Troupe 5 man squad
+Fusion Pistol and Harlequin's Caress
Death Jester
Shadowseer
+Neuro Disruptor
Troupe 5 man squad
+Neuro Disruptor and Harlequin's Kiss
Death Jester
Shadowseer
+Neuro Disruptor
Troupe 5 man squad
+Shuriken pistol and Harlequin's Embrace
Death Jester
Shadowseer
+Neuro Disruptor
Solitaire
Skyweaver 2 man squad
+Zephyrglaive
Skyweaver 2 man squad
+Haywire cannon
Voidweaver
+Prismatic cannon
(1345 points)
Now I normally play 2000 point games and this is going to be a elite army so low model count now I want to add some grey knights for fluff reasons a custom sort of alliance between a small brotherhood of grey knights that seem to always bump into these harlequins as they mostly hunt daemons.
Now my question is what to take with the grey knight faction to give it that added bonus to make it viable I need range and psyker powers hence why I am choosing grey knights as the allied factor but I don't know much about what is good or bad with grey knights other then the big robot that sets everyone on fire