So while creating my chaos space marine army on army builder (which i am new too) i noticed a spot under the roster tab that said something about "allies" so...i clicked on it and continued clicking around and it said "kroot mercenariness" or something to that effect. so does this mean i could have part of the Kroot army as a hired gun? just curious. and Also ive been wanted to try out the Necrons and i just want some feed back and advice maybe some tips or hints about them. i dont want to rush into buying anything but i want to experience more of 40k.