Starting with the new Job ability : Elemental Siphon!
Formula:
(Smn Magic Skill- 50) * (1.X)= Mp regained
X = number of Day or weather effects that correspond with your current spirit. (Max of 3)
Each day or weather effect seems to add 10% more mp, it only remains 10% if there is only 1 effect active thats helping you.
I've noticed that if you have all three effects matching (windsday,double wind weather) you gain about a 34.5% increase of mp.
I've not tested just double weather or 1 weather + 1 day.
Accordingly this bonus also acts in the opposite way if you use a spirit that is weak to the current element you'll lose 10% for each effect this way.
My smn magic skill at best right now is 300 and i've seen 250,275,312,337 as my good values of mp returned so far. If any other smn's out there would like to submit more data post it here.
I'm running out of time to go on about more SMN stuff but i'll come back later.
Next lessonw ill be Smn enmity/ what you don't do if u want to live!
Elemental staves and Obi's do not effect the mp regained.
Siphon is on a 5 minute timer. (super hack for smn)




