[[File:IconBattleRage.png|left]]'''Ferocity is a rune effect in [[Battle Rage]]''' is , a Fury Spending [[Barbarian skillFury]] unlocked at -spending [[clvl|LevelBarbarian skill]] 3.

An This rune effect retains the base skill function, but adds a bonus so that all [[Indigo Critical Hits]] landed with the skill active increase the duration by 2 seconds. A fast-attacking Barbarian with a good amount of increases Critical Hit chance equipment can thus keep this effect going almost indefinitely.  ==Skill RuneEffects==See the [[Battle Rage rune effects]] placed article for thorough descriptions of all five rune effects in it this skill, including screenshots, videos, and strategy tips. {{skill description header}}<skill subcat="Shout" class="Barbarian">Battle Rage</skill><skill class="Barbarian" rune="Ferocity">Battle Rage</skill>    ==Media== Screenshots and movies will alter be added post-release.  ==Development== Prior to the skill revision in February 2012, this rune effect was enabled by the [[Indigo Rune]], granting the following way.effect with a level 7 runestone: