Spirit

From Basin Wiki

Spirit increases the rate of health and mana regeneration.

Health regeneration only takes place out of combat. Mana regeneration may take place in combat, but not for five seconds after completing a spell cast.

Current formulas operate in the form of (spirit/x)+y. X and Y vary per class.

Mana Regeneration Numbers:
Priest = (spirit/4)+13
Mage = (spirit/4)+11
Warlock = (spirit/4)+8
Druids = (spirit/5)+15