Heavily themed list. Set myself the restriction of taking nothing with a Mark other than Tzeentch. I've played two games with so far, both against Grey Knights (2 wins. Invulnerable saves on literally everything makes Grey Knight force weapons sad).
HQ
Daemon Prince of Tzeentch "Askaroxialotep " - 200
Mark of Tzeentch, Warptime, Wings, Bolt of Change
Sorceror Lord of Tzeentch "Phosis-Ra" - 185
Mark of Tzeentch, Warptime, Wind of Chaos
Elites
5 Thousand Sons Terminators "Spears of Change" - 215
3 Combi-Meltas, Icon of Tzeentch, 1 Chain Fist
Troops
10 Chaos Space Marines "The Scourged Warband" - 300
Rhino, 2 Meltaguns, Icon of Tzeentch, Champion, Power Fist, Havoc Launcher
9 Thousand Sons and Chaos Sorceror "Ghosts of Prospero" - 324
Rhino, Personal Icon, Wind of Chaos, Havoc Launcher
9 Thousand Sons and Chaos Sorceror "Ghosts of Prospero" - 309
Rhino, Personal Icon, Wind of Chaos
9 Summoned Lesser Daemons of Tzeentch - 117
Heavy Support
Chaos Predator "Death of Reality"- 130
Lascannon Sponsons
Chaos Vindicator "Broken Balance" - 145
Daemonic Possession
Obliterator - 75
2000 points.
Close range shooting army with a few close combat and long range options.
Bolt of Change on the Daemon Prince is because in my experience he can kill himself out of assault range with Wind and die to shooting so this way I get a little ranged anti-transport.
Summoned Daemons either assault as they deep strike or sit on objectives and go to ground a lot.
Terminators are intended to hunt vehicles. I'm rather fond of these since I converted some from Grey Knights.