Positive
From Tales of Maj'Eyal
Positive energy is the power source used by both of the Celestial classes (Sun Paladins and Anorithil). Many early talents will actually replenish it rather than drain it.
Positive energy is associated with illumination, light damage, and healing.
The size of the Positive energy pool increases by 3 points per level, independent of all stats and talents. Positive energy drains naturally over time, and is replenished only through the use of certain related talents.