I know you said 'most effective' but I couldn't resist including the Grand Poobah himself.
HQ (230)
Drazhar, Master of Blades
Elites (503)
4 Incubi
Venom- 2nd splinter cannon
5 Incubi
Venom- 2nd splinter cannon
5 Incubi
Venom- 2nd splinter cannon
Troops (644)
7 Wyches - Hekaniser
Raider
7 Wyches - Hekaniser
Raider
6 Wyches - Hekaniser, haywire grenades
Raider
6 Wyches - Hekaniser, haywire grenades
Raider
Fast Attack (156)
3 Reavers - heat lance
3 Reavers - heat lance
Heavy Support (465)
Razorwing Jetfighter - lances, monoscythe missile x4, night shields
Razorwing Jetfighter - lances, monoscythe missile x4, night shields
Razorwing Jetfighter - lances, monoscythe missile x4, night shields
This list sees Drazhar allying with those who share his high regard for The Close Combat Kill.
The army's plan is brutally simple!
- Razorwings unleash hell on the unworthy, then join Raiders and Reavers in picking off armor/transports
- Wyches engage units in cover or those that ignore regular armor saves
- Incubi deal with the rest.