[Fantomen]

FYI I did test it, both with blood and astral and mixed communions, same result.

But to take the most obvious of all tests as an example: A S7 caster with 2 communicants casting master enslave kills both slaves with that single casting.

Of course I knew this beforehand, but anticipated you would pull that as your next strawman.

Someone might wonder why I bother?
It's because this kind of thing can give new players a hard time, when someone seemingly knowledgeable gives advice, but that advice turns out to be complete misinformation. Non slave sabbaths is not a nerf, not a big scripting issue. It works like an astral communion. Spill over fatigue in communions damages the slaves, you can not do any tricks by putting them at just under 200 fatigue, you need to recover them enough to withstand what your master are casting. There are no "other fatigue reducing spells" that can be compared to reinvigoration for zeroing slave fatigue, that's why you want to add a blood master. There are other clever ways to recover your slaves, like having them cast drain life, or buff them with soul vortex and giving them bodyguard batteries, pythiums communicants can be quickened and given a standard of the damned, and so on, but the principle is the same, to keep them alive you need to keep them under 200 fatigue.

While reverse communions with pure blood mages as slaves might sometimes cast sabbath master if poorly scripted, the solution is to learn proper scripting, not to blame the game or this mod.