Wisdom to Mana conversion ratio?

[DeathsSilkyMist]

I did another few tests with my Shaman, all under 200 WIS. Reducing 100 WIS got me 11.2 mana per WIS. Reducing my WIS by 10 got me 11.3 mana per WIS. Reducing my WIS by 5 got me 11.6 mana per WIS. Reducing my WIS by 2 got me 11.0 mana per WIS. It looks like the mana per WIS calculation fluctuates between 11 and 12 mana per WIS at level 60, depending on how the rounding works out. 11.6 was the highest I saw, but I could not test a +1, a +6, a +8, or a +9 WIS item to see what the results were. So I am assuming right now 11.6 is the highest it will go, and 11.0 is the lowest.

For Clerics and Shamans the formula for AVERAGE mana gained per WIS is:
1. 0.1883333 * WIS * LEVEL = Mana gained while under or at 200 WIS
2. (0.1883333 * WIS * LEVEL)/2 = Mana gained while over 200 WIS

This will be a little bit off, depending on how the rounding works out. For OP's specific example, a +6 WIS item on a 41 Cleric should give roughly 46 Mana, + or - a point or two.