Guide: Guide to communions

[thejeff]

The manual, as far as I can tell, says nothing about how fatigue is divided in communions, other than that the slaves share the fatigue.

I tried doing some testing this weekend and what it proved to me was that I couldn't even get fatigue without communions right. The manual says fatigue should be the given fatigue for the spell times 1/(1+(magic skill - minimum skill)) plus spell casting encumbrance.

I tried this with Arcosephale, because I wanted to see how fatigue got spread around communions with various paths boosted and/or missing.

Before I even got to the communion I saw:
My prophet casting holy spells (0 fatigue) with 10 encumbrance, got a straight 10 fatigue every time.
A Priestess, with 3 encumbrance, got 3 fatigue for every holy spell.
Then she cast Protection, which is N1, 20 fatigue and gained 27 fatigue, not 23.

Mystics are also 3 fatigue and those with 1S also got 27 fatigue when casting Communion Slave
A Mystic with 2S got 15 fatigue from Communion Slave, not (1/(1+2-1))*20+3 = 13
Casting Body Ethereal, which is still 1S, but 30 fatigue, the 1S Mystic got 39 fatigue and the 2S got 21.

Once the Communion was up with 8 slaves, the Master cast PotS and got 6 fatigue. He started with 1S.
The slaves who started with 1S got 4 fatigue and those who started with 2S got 3.
I can't even try to calculate that out, until I understand the non-communioned results.

So, is the manual wrong about fatigue calculations, or am I misinterpreting something?