As for the 1250 points list,
I went this saturday at a local tournament with this list, worked very well and is quite balanced :
Allegiance: Tzeentch- Change Coven: Eternal ConflagurationLeadersThe Blue Scribes (120)- Lore of Change: Tzeentch's FirestormFatemaster (120)- General- Trait: Coruscating Flames- Artefact: Shroud of WarpflameGaunt Summoner on Disc of Tzeentch (260)- Lore of Fate: Arcane SuggestionBattleline10 x Pink Horrors of Tzeentch (200)10 x Pink Horrors of Tzeentch (200)3 x Flamers of Tzeentch (120)3 x Flamers of Tzeentch (120)Units1 x Exalted Flamers of Tzeentch (100)Endless Spells / Terrain / CPsMalevolent Maelstrom (10)Total: 1250 / 1250Extra Command Points: 0Allies: 0 / 200Wounds: 52