Tried today Emerald Host with Death Riders and Cruciator.
Olinder, Cruciator, Torment, Guardian, Harrow, 30 reapers, 12 banshees, 2 chaingheists, 2x5 Hexwraiths, coach.
Against Skryers stand and shoot:
Tanquol, doomwheel, lightning canon, 2x3 fiends, engenier, bombardier, 6 snipers, 3x1 ratling gun, 5 acolytes.
Man I love this bad boy. Cruciator effectively tripled deathless saves. With him five wraiths tanked 6 rat snipers, 2 rat machinegunners, 3 stormfiends for a whole double turn of fire.
Second squad WoTed full Tanquol.
30 reapers lost only 10 to fiends fire for a whole double turn.
Now nighthaunts really have dakka - cruciator+chaingheists wiped half of snipers.