Used Acambe instead of Lash and any ranged (phys) dmg Dealer instead of Faycal is fine(Ballista/Divine Grace) I think, in my case I used Ballista. In general slapped any maxed gear + Devil Tarot(bcs of Acambes Minions) on my 3 Main Carries. Didnt use Acambes Minions wisely but they can be very useful tanking hits and they helped alot getting Devil Tarot stacks so Acambe/Beryl were tanky enough to tank a hit worst case.
loll not much it seems, could be replaced with anything but i think this was to make a free to play version. Faycal was prob used for ranged dps, probably a better one would be nungal but you would prob just cheese the boss with her at that point