Astronomicon CSM

19/20, I think. (Might be 18)

Ahriman 230
Dark Apostle: Mark of Tzeentch; The Black Mace. 165

3 Mutilators: Mark of Tzeentch. 189

6 Thousand Sons: Aspiring Sorcerer (gift of mutation; melta bombs). 188
• Chaos Rhino: Havoc launcher; warpflame gargoyles. 52
12 Chaos Cultists: flamer. 63
10 Chaos Cultists: Cultist Champion (shotgun); 8× autogun; heavy stubber. 65
6 Chaos Space Marines: plasma pistol; plasma pistol; 2× close combat weapon; plasma gun. 133
• Chaos Rhino: extra armour. 45

Heldrake: baleflamer. 170

Forgefiend: ectoplasma cannon. 200

1,500 points

Play testing Edits.

Ahriman has 3 wounds and is still fearless.  With 3 biomancy rolls (or telepathy), he can be more of a force multiplier than the apostle & sorcerer.

Ahriman 230

20 Chaos Space Marines: power weapon; 15× close combat weapon; plasma gun; plasma gun. 315
5 Thousand Sons 150
• Chaos Rhino: Havoc launcher; warpflame gargoyles; extra armour. 62

Heldrake 170
5 Raptors: power weapon; 2× meltagun. 130

Forgefiend: ectoplasma cannon. 200

Heralds of Chaos 0
• Herald of Tzeentch 45

12 Pink Horrors of Tzeentch 108
10 Pink Horrors of Tzeentch 90

1,500 points

One unit of horrors and the raptors deep strike in, 20 dudes infiltrate with Ahriman, the sons infiltrate too (if possible).

Being that I have to pre-pick powers, Tzeentch and 3xBiomancy (hope for endurance)