Energy

This is what casters use to pay for spells.

Overview
Energy is the magic or mana style resource for casters in KoL. It behaves much like mana in any other game, and is used to cast and balance powerful spells and abilities. Energy has a fixed regeneration rate of .5625, but this can be changed for certain units through upgrades.

Upgrades
A list of upgrades that affect Energy or Energy Regeneration: