Wis

Wisdom
Wisdom is being able to discern the true nature of things and to be able to plan a successful course of action with that discernment in mind. The gods do not suffer fools gladly, and require their foremost adherents to possess a great deal of wisdom. In game terms, priests prize their WISDOM above all other stats, as their spells largely depend on WISDOM, as do their gains in mana. Characters with a high WISDOM gain more PRACTICE sessions the higher WISDOM is. WISDOM also can affect the saves of a player character.

NOTE - if you level, and your WISDOM is lower than it was when you last levelled, you may notice you gain zero (0) practice sessions. DON'T PANIC. You do -not- lose you practice sessions. Instead, to get these practice sessions back, be sure your WISDOM back to the highest score your character had had previously. (In other words, if at level 13 you had a wisdom of 75, and at level 14 your wisdom was 70, you will likely have gain 0 practice sessions. This is normal. When next you level, at 15, just be sure to bring your wisdom back up to 75 or better, and you will 'regain' those sessions.)