Mana

Mana is what characters consume when using psionic abilities. It is determined using the following formula:

Mana = 100 + level x wisdom modifier (minimum 1)  x 10 + miscellaneous modifier

Mana can be restored using certain consumable items and regenerates at a rate of 10 x character's level x wisdom mod (minimum 1) every time the character rests for a considerable period.