Thank you Victor, though I've already managed to add night battles and make EB playable with bi.exe. Anyways, as for hording factions it will be Sweboz, Sauromatae and Saka Rauka. I'm open to other suggestions though, like maybe Getai for example. I would also appreciate it if someone could propose me 6 hording units for each hording faction.

Thank you all again for your interest!