Warriors freshly awoken from their (apparently not) eternal slumber.

Necrons

• HQ: Lord with resurrection orb and staff of light = 75
• Troop: Warriors (10) = 130
• Troop: Warriors (10) = 130

Khorne Daemonkin

• HQ: Herald = 55
• Troop: Bloodletters (8) = 80
• Fast Attack: Flesh Hounds (5) = 80

Orks

• HQ: Weirdboy (level 2 psyker) = 70
• Troop: Choppa Boyz (22); nob w/ big choppa & boss pole, one rokkit = 151
• Troop: Shoota Boyz (23); nob w/ big choppa & boss pole, two big shootas = 191
• Troop: Gretchin (11) = 38

This list uses two Combined Arms Detachments, with either the Orks or Necrons being the primary force.  The Daemonkin are allies.  The overall warlord could either be the psyker or the lord.

Interestingly (and who knew?) Khorne heralds are apparently consummate diplomats.  The Orks and Necrons don’t trust each other and optimally tend to keep their distance during the fighting, whereas the daemons are free to mingle with either side.  I suspect that the Orks intuit that they and the horned boyz both just want to “get stuck in”.  As for the Necrons, they probably find Daemonkin behavior extremely predictable and so their actions don’t play merry hell with logical calculations and circuitry.  Certainly can’t say that about the greenskins!

Khornate gribblies encounter the Imperium of Man

I’ve played my Terrible Trio now a few times in casual games and they’ve done alright.  Win about half the time and that is what I’m hoping for.  My general 40K list building philosophy is if I’m winning or losing more than about half the time against my regular opponents of similar skill and luck, then something is wrong with my list and it either needs to be toned down or toughened up.

The “desperate allies” thing can be a challenge, so what I usually do is deploy the Necrons first, often lining up against whatever armor my opponent plunks down if I’m setting up second.  Then the Orks rank up after that with the daemons either deep striking or deploying to take advantage of terrain or something I see in the set up.  One common theme is I use the khornate forces to protect the Necrons from close combat.

Why play this odd combination?  Story-wise it is easy to justify almost anything.  The real reason is I haven’t been painting Daemonkin very long and I wanted to use my painted models in games.  In general, playing with models I paint is the engine that keeps me painting.  As for the Necrons, someone gave me a bunch of models, which I’ve put into the paint stripper and have been slowly refurbishing.  Ditto on not having enough to field a proper army.  So I team up both factions with my main painted forces — the Orks.