[thejeff]

1) Slaves gain actual self buffs a Master casts. Body Ethereal is a bad example, since it's really AoE 1. Personal Luck would work. Luck would not.

2) Other masters do not gain buffs.

3) Slaves only gain buffs the master casts while he and they are in communion.

4) The master casting the spell and all the slaves split the fatigue.

5) Fatigue from a slave casting goes to that slave.

6) Slaves only gain the communion path bonuses for the purpose of absorbing fatigue from the Master's spell. Any spells they cast are at their normal path levels.

Path booster spells, Power of the Spheres, Summon Earthpower, etc count as self-buffs, so slaves get the boost from them even for casting their own spells.