Exhausting Rage

You rage so powerfully that you become exhausted once you calm down.
Prerequisite: Rage ability.
Effect: When you end your rage, you become exhausted (instead of fatigued) for the duration of the encounter. If you gain the ability to rage tirelessly, as a 17th-level barbarian, you are instead fatigued after a rage.
Suggested Class/Race: Barbarians
Source: Dragon Magazine #325 (Class Acts - Flaws For Barbarians)