Earthquake is a Rage Barbarian skill unlocked at Level 19, which causes a huge wave of damage in all directions.
The Barbarian's ancestors aid him by splitting the earth asunder around him, wreaking havoc upon any enemies caught in it.
Skill Rune Effects
The following is a very quick summary. See the Earthquake rune effects page for a more thorough description of rune effects, or any of the individual rune pages for numbers, screenshots, blue quotes, and much more.
|| Cost: 25 Fury|
Cooldown: 60 seconds
Shake the ground violently, dealing 4800% weapon damage as Fire over 8 seconds to all enemies within 18 yards.
|| Giant's Stride
|| 20 secondary tremors follow your movement and deal 300% weapon damage as Fire each.
|| Chilling Earth
|| Create an icy patch, causing Earthquake to Freeze all enemies hit and deal Cold damage.
|| The Mountain's Call
|| Remove the Fury cost and reduce the cooldown to 30 seconds.|
Earthquake's damage turns into Lightning.
|| All enemies within 24 yards are pulled in towards you.|
Earthquake's damage turns into Physical.
Not much is known about this skill, since it was pretty high in the skill tree in the BlizzCon 2009 demo. It could be a combination of Ground Stomp and Seismic Slam, causing a huge seismic slam in all directions that either knockbacks, stuns or do both to enemies.
The following Barbarian passives provide a benefit to Earthquake, runed or not:
Earthquake was introduced at BlizzCon 2009 in the Juggernaut Skill Tree at Tier VI. For the BlizzCon 2010 demo, after skill trees were removed, Earthquake was a Tier 7 skill. At both events, it was too high a level to try out, so there are no gameplay reports describing it.
Skill tiers were removed for the July 2011 Press Event, allowing skills to unlock steadily from levels 1 to 30. Consequently, all skill levels were adjusted and Earthquake became a level 24 skill.
The Diablo III Beta started in September 2011, and while it ran, all of the skills continued to undergo extensive iteration. Skill changes varied from changing the levels the skills are unlocked, to changes in resource cost, damage, and even function. A few skills were removed altogether, and a few new ones were added. Also, the entire skill system received an overhaul with the Beta Patch 13 update in February 2012, with physical runes replaced by rune effects that automatically unlock at various levels for the different skills.
Earthquake was dropped to level 21 for the beta. With the Patch 13 changes, it was classified as a Rage skill and moved to level 19.
Earthquake can be seen in action on video here:
You can find pictures in the Diablo III screenshot and picture gallery: