So in the end it was all for naught: Both Vlad and Darnic will lose what they wanted, and the black camp is in a clear disadvantage. I did not expect the use of command seals from Ruler, but now i can only see Shirou betraying the red servants, or the red servants losing more than the black to Dracula to balance things out. Both can happen as the black side will retreat, given that Caster of black has yet to build his Noble Phantasm.
Now I am curious as what will be needed to destroy Dracula without resorting to his other weaknesses, as he was already impaled at his heart by Lancer of red.