Crazy question; say I hadn't played more than 1 game of 40k in the last 5 years, but wanted to play with Dark Eldar and a contingent Daemons (since I guess allies are a thing now?)? Is that possible, and does anyone know of any good PDF links so I don't have to buy 2 Codexes? Also, can you use allies in Kill Team or no? Like a Dark Eldar strike force with a summoned Bloodcrusher?