[quote=@Darlit Glitch]

As quickly or as slowly as I wish, though they only take a certain amount.
The energy taken is then stored within the zone itself for me to draw from as I please.
Life energy is included in the kinds of energy drained, and when within a zone the colors of natural light are inverted.

Definitely.
[/quote]

What is the total limit? Why would you drain it at any rate below the fastest available?