i wouldnt even worry about shooting, thats one unit now no matter how you run in a flank charge from anything even remotely resembling a hydra, minos, knights, white lions, swordmasters, and you've already lost the battle, if your going for a bloodbus you have to go all out with 8-10 blood knights otherwise its a deathstar but its got a hole a lot bigger than what skywalker shot through, and they only have their two up armour save in combat a single s6 razorgor chariot on the charge would kill two blood knights. this is why the wolfstar/dogstar is superior.....cheaper more models, regen banner, and larger flank with the new stepping up rules all your charcters HAVE to fight, oh and your necromancer is just dead weight, hope i wasn't too critical 
