I agree the BoC units shouldn't be taken as cheaper but the allegiance ability states tzeentch unit, which is what they still are on their warscroll. So if you took tzaangors as an ally they still can have DD dice used with them.
This is true, take kairos, blue scribes and belakor and if all spells go off, with reroll spells, you get a LoC on turn 1 which is a huge amount of points. Then by turn 3 you are around the point of another.
OK, I must admit dead on arrival is a bit extreme. I know a big faq due and horrors will get changed but currently cant go above starting models, fleeing is not killed and way too many ways to stop inspiring to force a battleshock. You also cant zone as much with them
Yeah but no reason not to for all tzaangor on disc, I agree with people though, unless there are warscroll changes or points corrections tzeentch and slannesh are dead on arrival
So rules as written at the moment you can take coalition units with tzeentch keyword, which could be the cheaper tzaangor, enlightened, skyfires and shaman from BoC. Haha