Re: Can a Mage be Both Communion Slave *and* Maste
 

Not quite that simple, I don't think.

They only get the benefit of the regen once they hit 200 fatigue and start taking damage. And while, 1hp = 1 fatigue, that's rounded up, so after 200 fatigue they'll take 1 hp for every spell cast. Since slave mages tend to be normal humans, they'll only have ~10 hp and thus regen 2 max. It'll help, but much less than having a master cast Summon Earthpower or an Earth bless(assuming sacred slaves) since that'll help keep them from reaching 200 in the first place.