I get bored. And I get a bit tired of the same old same old. So I compiled a list for 1000 points and it's either a surprise good list, or the worst list in history. Before I play it, I'll let you in on it. I already know it has the potential to be the stupidest list in history, so feel free to tell me what you think.
Infernal Tetrad Formation
Daemon Prince of Khorne:
Daemonic Flight, Warped forged Armour, Artifact: Skullreaver (250)
Daemon Prince of Nurgle:
Daemonic Flight, Artifact: Corruption, Psychic Mastery Level 1 (250)
Daemon Prince of Slaanesh:
Warped Forged Armour, Artifact: Soulstealer (195)
Daemon Prince of Tzeentch: (warlord)
Daemonic Flight, Artifact: The Impossible Robe, Psychic Mastery Level 3, Greater Reward (305)
The Skinny: Since the TzPrince is the Warlord, there is a chance he will get the Warlord trait that increases his invulnerable save by one. As per the formation rules, each Prince will also share that warlord trait. Also there is a trait that would add one PML to each Prince except the Khorne Prince (although it doesn't actually state he doesn't become a psyker, I don't think a Khorne prince could ever become one!). In short, there are tons of great warlord traits in Tzeentch that would help every Prince.
I would be interested in getting the TzPrince +1 to his invulnerable save to compliment the Impossible Robe. I would like the TzPrince to summon troops and buff himself using Malefic powers. If there are warp charges left over, it falls to the Nurgle Prince to do as much damage as he can. The Khorne and Slaanesh Prince's are to get up into combat as quickly as possible.
The problems I see are controlling objectives. With 4 models, it just isn't easy, that's why summoning troops is somewhat important. As soon as one Prince dies, it will be downhill from there. With all 4 Princes on the board, all of them are toughness 6 which is important. I'm hoping that at 1000 points, my opponent won't have a ton of firepower, but that is probably a pipe dream.
In conclusion, I doubt this list will won't work and I'll wager it will possibly be the worst list in history. I guess it will depend on the mission and my opponent. After I do play it, I'll let you know how it went.