Expertise

Overview

 * Expertise is the primary Attribute of Rangers, and thus only accessible to them.
 * Expertise reduces the energy costs of all non-spell skills from any profession at a rate of 4% per point. Attacks, Glyphs, Nature Rituals, Preparations, Stances, Shouts and Traps are affected.
 * See also the list of Skills having Expertise as their main attribute.

Skill Cost Modification By Expertise
Same data displayed differently to show its pattern of "-1 pyramids":