Improved Darkvision
( Epic Level Handbook, p. 58)[Epic]
Your ability to see in the dark is greater than normal.
Prerequisite
Darkvision,
Benefit
The range of your darkvision doubles. This feat does not stack with darkvision granted by magic items or nonpermanent magical effects.
Special
This feat may be taken multiple times. Its effects stack. Remember that two doublings equals a tripling, and so on.