Earthquake

EarthquakeAttack, AoE, Melee, Slam, Duration
Tier: 1
Level: (1-20)
Cost: (8-61) Mana
Attack Speed: 75% of base
Attack Damage: (40-125)% of baseSmash the ground, dealing damage in an area and leaving behind Jagged Ground that slows enemies. The Jagged Ground erupts in a powerful Aftershock after a duration. Cannot create Jagged Ground on top of an existing patch, or if you already have the maximum number of active patches.Impact
100% increased Magnitude of Jagged Ground you create
While Dual Wielding, both weapons hit with 30% less damage
Impact radius is 1.8 metres
Jagged Ground radius is 2.2 metres
Maximum (2-4) Jagged Ground patches
Jagged Ground duration is 4 seconds

Aftershock
Attack Damage: (130–405)%
100% increased Magnitude of Jagged Ground you create
While Dual Wielding, both weapons hit with 30% less damage
Aftershock radius is 3.4 metres

Additional Effects From 1-20% Quality:
+(0.1-2) maximum Jagged Ground patchesSkills can be managed in the Skills Panel.

Acquisition
Drop restricted
It can be obtained by engraving an Uncut Skill Gem.Metadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemEarthquake

Earthquake is a mace slam skill that deals damage in an area and leaves jagged ground. Jagged ground created this way will release a powerful aftershock after a duration.

Gem level progression

Level		Mana Cost	Attack Damage	Maximum Jagged Ground patches	Aftershock Attack Damage
1	0	8	40%	2	—
2	3	9	44%	2	—
3	6	10	48%	2	—
4	10	11	53%	2	—
5	14	13	57%	2	—
6	18	14	61%	2	—
7	22	16	66%	2	—
8	26	17	69%	2	—
9	31	19	73%	3	—
10	36	21	77%	3	—
11	41	24	80%	3	—
12	46	26	84%	3	—
13	52	29	89%	3	—
14	58	33	93%	3	—
15	64	36	98%	3	—
16	66	40	103%	4	—
17	72	44	108%	4	—
18	78	49	113%	4	—
19	84	55	119%	4	—
20	90	61	125%	4	—

Recommended support gems

The following support gems are recommendations by GGG as listed in-game, and do not necessarily reflect optimal combinations or the views of the wiki.

Gem tier	Support gems
I	Brutality IBrutality ISupport, Physical Category: Brutality Tier: 1 Cost & Reservation Multiplier: 120%Support Requirements: +5 StrSupports any skill that deals damage, boosting its Physical damage at the expense of all other Damage Types.Supported Skills deal 25% more Physical Damage Supported Skills deal no Chaos Damage Supported Skills deal no Elemental DamagePlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Compressed Duration ICompressed Duration ISupport, Duration Category: Compressed Duration Tier: 1Support Requirements: +5 StrSupports any skill that has a duration making that duration shorter.Supported Skills have 30% less Skill Effect DurationPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Fist of War IFist of War ISupport, Attack, Melee, Slam Category: Fist of War Tier: 1 Cost & Reservation Multiplier: 150%Support Requirements: +5 StrSupports Slams you use yourself, providing a powerful Ancestral Boost every few seconds.Attacks with Supported Skill are Ancestrally Boosted, no more than once every 6 secondsPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
II	Aftershock IAftershock ISupport, Attack, Melee, Slam Category: Aftershock Tier: 2Support Requirements: +5 StrSupports Slams you use yourself, giving them a chance to create an Aftershock.Supported skills have 25% chance to cause an AftershockPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Brutality IIBrutality IISupport, Physical Category: Brutality Tier: 2 Cost & Reservation Multiplier: 120%Support Requirements: +5 StrSupports any skill that deals damage, boosting its Physical damage at the expense of all other Damage Types.Supported Skills deal 30% more Physical Damage Supported Skills deal no Chaos Damage Supported Skills deal no Elemental DamagePlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Encroaching GroundEncroaching GroundSupport, AoE Category: Encroaching Ground Tier: 2 Cost & Reservation Multiplier: 110%Support Requirements: +5 IntSupports Skills that create Ground Surfaces, causing those Surfaces to grow over time, up to a limit.Ground Surfaces created by Supported Skills gain 20% increased Area of Effect per second, up to a maximum of 100%Place into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
III	Compressed Duration IICompressed Duration IISupport, Duration Category: Compressed Duration Tier: 3Support Requirements: +5 StrSupports any skill that has a duration making that duration shorter.Supported Skills have 35% less Skill Effect DurationPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Fist of War IIFist of War IISupport, Attack, Melee, Slam Category: Fist of War Tier: 3 Cost & Reservation Multiplier: 150%Support Requirements: +5 StrSupports Slams you use yourself, providing a powerful Ancestral Boost every few seconds.Attacks with Supported Skill are Ancestrally Boosted, no more than once every 4 secondsPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Stoicism IStoicism ISupport Category: Stoicism Tier: 3Support Requirements: +5 StrSupports Attack Skills you use yourself. Supported Skills steadily gain more Damage, up to a cap. This Damage bonus is reset if you Dodge Roll or use a Travel Skill.Supported Skills gain 1% more Damage every second, up to 20% This Damage Bonus resets if you Dodge Roll or use a Travel SkillPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
IV	Aftershock IIAftershock IISupport, Attack, Melee, Slam Category: Aftershock Tier: 4Support Requirements: +5 StrSupports Slams you use yourself, giving them a chance to create an Aftershock.Supported skills have 35% chance to cause an AftershockPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Heavy SwingHeavy SwingSupport, Attack, Melee, Physical Category: Heavy Swing Tier: 4Support Requirements: +5 StrSupports Melee Attacks, boosting their Physical damage at the cost of Attack Speed.Supported Skills deal 35% more Melee Physical Damage Supported Skills have 10% less Attack SpeedPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Rageforged IRageforged ISupport Category: Rageforged Tier: 4Support Requirements: +5 StrSupports any damaging skill that you use or trigger yourself, causing it to consume Rage to deal more damage. If you don't have enough Rage to consume, the damage bonus will not apply.Supported Skills consume 10 Rage if possible to deal 35% more DamagePlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.
V	BrambleslamBrambleslamSupport, Attack, AoE, Melee, Slam, Physical, Hazard Category: Brambleslam Tier: 5Support Requirements: +5 DexSupports Slam Skills. Supported Skills create Hazardous Brambles on the ground that activate after a duration. Enemies which come in contact with these thorns take damage and are Maimed. A maximum of 20 Brambles are allowed at one time. Does not modify Skills used by Minions or Totems.Supported Slams create 3 Brambles Brambles Cooldown Time: 0.15 s Hazardous thorns damage and Maim enemies with which they come in contact. Attack Damage of this skill is 35% of Default Attack Damage Increases and reductions to Thorns Damage apply to Hit Damage with this skill Maim on Hit 80% less damage if destroyed within 0.5 seconds by something other than you Bramble radius is 1 metre Bramble duration is 8 secondsPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	Brutality IIIBrutality IIISupport, Physical Category: Brutality Tier: 5 Cost & Reservation Multiplier: 120%Support Requirements: +5 StrSupports any skill that deals damage, boosting its Physical damage at the expense of all other Damage Types, as well as giving Hits from that skill a chance to ignore Physical Damage reduction.Supported Skills deal 30% more Physical Damage Supported Skills deal no Chaos Damage Supported Skills deal no Elemental Damage Hits with Supported Skills have 20% chance to ignore Enemy Physical Damage reductionPlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.	HeftHeftSupport, Physical Category: Heft Tier: 5 Cost & Reservation Multiplier: 120%Support Requirements: +5 StrSupports Skills which deal Damage, increasing the maximum Physical Damage of their Hits.Supported Skills deal 30% more Maximum Physical Hit DamagePlace into a Skill's Support Gem socket in the Skills Panel to apply its effects to that Skill. You cannot have multiple Support Gems of the same Category socketed within one Skill.

Item acquisition

Earthquake has restrictions on where or how it can drop.

It can be obtained by engraving an Uncut Skill Gem.

Alternate skill effects

Earthquake has the following alternate skill effects:

Item	Description

Version history

Version	Changes
0.3.0	Earthquake: Jagged Ground's radius is now 1.8 metres (previously 2.2). Aftershock now has 160-580% Attack Damage at Gem levels 1-20 (previously 150-468%), and has a radius of 2.4-3 metres at Gem levels 1-20 (previously 3.4 at all Gem levels).
0.2.0	Many Skills have had their base damage and/or damage growth per level rebalanced. Most of these changes are not specifically mentioned below as the changes are too widespread. The mana cost for all Attacks, Marks and Warcries has been reduced, most notably at higher Gem levels.
0.1.0	Introduced to the game.