All though we have heard of the grand alliance boxes we still dont know exactly what they contain,

i have seen an image of what comes in the sylvaneth and khorne bloodbound kits.

Sylvaneth are -

drycha, treelord, 2x tree revenant kits and 2x kurnoth hunters for £100!!!!

as for the khorne the image was blurry but from what i could see it was simalar to the last big khorne box with skarr bloodwrath, aspiring champion, 3x juggers, blood warriors, wrathmongers, and some reavers.