What is the path of blood for?

[Deadnature]

Good to know, its too bad that would prevent a reverse communion.

[Knai]

If you assign blood slaves to each mage individually, and keep the communion master well away from the communion slaves you might be able too prevent communion slaves from using communion master blood slaves. Of course, doing this does tend to concentrate your slaves in two areas, leaving them vulnerable to, say, bladewind. How much that matters is up for debate, given that they were already one earthquake away from annihilation.