I was thinking of having the SH together with the Spirit Torment (as my general also) and bring them from the underworld. The reapers would run around with the vampire lord having the extra attacks in. The horde and GoS would do whatever would be needed, and try to push Lady O up carefully using the palisade also. The glaivewraith could probably cap objectives, or if he places some artillery alone to a corner, jump them.