Earthquake

EarthquakeAttack, AoE, Duration, Slam, Melee
Level: (1-20)
Cost: (10-13) Mana
Attack Speed: 75% of base
Attack Damage: (143-229)% of base
Effectiveness of Added Damage: (143-229)%
AoE Radius: 18 / 28Requires Level 28Smashes the ground, dealing damage in an area and cracking the earth. The crack will erupt in a powerful aftershock after a duration. Cracks created before the first one has erupted will not generate their own aftershocks. Requires an Axe, Mace, Sceptre, Staff or Unarmed.Base duration is 1.00 seconds
Aftershock deals 150% more Damage with Hits and Ailments

Additional Effects From 1-20% Quality:
Aftershock deals +(1.5-30)% more Damage with Hits and AilmentsPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.

Acquisition
Drop level: 28Metadata
Item class: Skill Gem
Metadata ID: Metadata/Items/Gems/SkillGemEarthquake

Earthquake is a melee attack that deals damage in an area and leaves a crack in the ground. After a duration, the crack releases an aftershock, dealing more damage in a larger area. Requires an axe, mace, staff or unarmed.

Skill Functions and Interactions

• Duration: increases and reductions to skill effect duration increase or reduce the time between impact and aftershock respectively. The following are some examples of gems and items that reduce skill effect duration: Less Duration SupportLess Duration SupportSupport, Duration
  Icon: d
  Level: (1-20)
  Cost & Reservation Multiplier: 130%Requires Level 31Supports any skill that has a duration.Supported Skills deal (10-19)% more Damage
  Supported Skills have (40-49)% less Skill Effect Duration
  
  Additional Effects From 1-20% Quality:
  Supported Skills have (0.5-10)% less Skill Effect DurationThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket., Swift Affliction SupportSwift Affliction SupportSupport, Duration
  Icon: r
  Level: (1-20)
  Cost & Reservation Multiplier: 140%Requires Level 31Supports any skill that has a duration, or can hit enemies to inflict ailments on them.Supported Skills deal (25-39)% more Damage over Time
  25% less Duration of Supported Skills and Damaging Ailments they inflict
  
  Additional Effects From 1-20% Quality:
  Supported Skills deal (0.5-10)% increased Damage over TimeThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket., TimeclaspTimeclasp
  Moonstone RingRequires Level 25+(15-25) to maximum Energy Shield(10-15)% increased Attack Speed
  (10-15)% increased Cast Speed
  (6-12)% of Damage taken Recouped as Life
  (6-12)% of Damage taken Recouped as Mana
  (-20-20)% increased Skill Effect Duration
  Unaffected by Temporal Chains"To us mere mortals, time is slippery.
  I'm just evening things out."
  - Doryani, Queen's Thaumaturgist, and Warped TimepieceWarped Timepiece
  Turquoise AmuletRequires Level 50+(16-24) to Dexterity and Intelligence(10-25)% increased Attack Speed
  (10-25)% increased Cast Speed
  (10-15)% increased Movement Speed
  (20-10)% reduced Skill Effect Duration
  Debuffs on you expire 100% fasterAs you have lived, so you shall die
  forever trying to keep up with me.
  Your blood on these hands of mine
  forever makes me the public enemy.. Be aware that global duration reductions also affect other skill effects, such as Molten ShellMolten ShellSpell, AoE, Duration, Fire, Physical, Guard
  Level: (1-20)
  Cost: (8-12) Mana
  Cooldown Time: 4.00 sec
  Can Store 1 Use(s)
  Cast Time: Instant
  AoE Radius: 15Requires Level 16Applies a buff that adds to your armour, and can take some of the damage from hits for you before being depleted. When the buff expires or is depleted, the skill deals reflected damage to enemies around you based on the total damage that was taken from the buff. Shares a cooldown with other Guard skills.Base duration is 3.00 seconds
  This Skill's Cooldown does not recover during its effect
  Buff grants +(115-858) to Armour
  75% of Damage from Hits is taken from the Buff before your Life or Energy Shield
  Buff can take Damage equal to 10% of your Armour, up to a maximum of 5000
  Reflects (100-3000)% of Damage taken from Buff as Fire Damage when Buff expires or is depleted
  
  Additional Effects From 1-20% Quality:
  (1-20)% increased Skill Effect DurationPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket..
• Dual Wielding: Using Earthquake while dual wielding will alternate between weapons. Aftershock damage is based on the weapon that performed the initial impact.
• Aftershock: The aftershock is the second half of the skill that hits and has a 150% more multiplier to hits and damaging ailments (poison, bleed, and ignite). The aftershock's multiplier does not apply to other DoTs like Decay SupportDecay SupportChaos, Support
  Icon: D
  Level: (1-20)
  Cost & Reservation Multiplier: 120%Requires Level 38Supports any skill that hits enemies.Supported Skills inflict Decay on Hit, dealing (163-1034) Chaos Damage per second for 8 seconds
  
  Additional Effects From 1-20% Quality:
  Supported Skills deal (0.5-10)% increased Chaos DamageThis is a Support Gem. It does not grant a bonus to your character, but to skills in sockets connected to it. Place into an item socket connected to a socket containing the Skill Gem you wish to augment. Right click to remove from a socket. or Corrupting FeverCorrupting FeverSpell, Duration, Physical
  Level: (1-20)
  Cost: (78-520) Life
  Cooldown Time: 1.00 sec
  Can Store 1 Use(s)
  Cast Time: InstantRequires Level 16Draws out your own blood to power a buff for a duration, letting this skill inflict the Corrupting Blood debuff on enemies you hit, dealing physical damage over time for a short secondary duration. The buff's duration will be refreshed if you spend enough life before it expires.Deals (7.8-335.4) Base Physical Damage per second
  Base duration is 6.00 seconds
  Base secondary duration is 1.00 seconds
  Buff Duration is refreshed after you spend a total of (26-205) Life
  
  Additional Effects From 1-20% Quality:
  (1-20)% increased Skill Effect DurationPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket.
• Accuracy: Accuracy is checked per hit: it is possible to hit with the initial aoe, but miss with the aftershock, and vice versa.
• Critical strikes: Crit is also checked independently per hit, but because hits from the same attack have the same crit roll, the aftershock will usually crit if the initial slam does. Conditional stats or debuffs like Brittle or Assassin's MarkAssassin's MarkCritical, Spell, Curse, Mark
  Level: (1-20)
  Cost: (16-33) Mana
  Cast Time: 0.50 secRequires Level 16Curses a single enemy, making them more vulnerable to Critical Strikes. Killing the cursed enemy will grant life and mana, and a power charge. You can only have one Mark at a time.Cursed enemies have a 100% chance to grant a Power Charge when slain
  Hits against Cursed Enemies have +1.5% to Critical Strike Chance
  Hits against Cursed Enemies have +(30-49)% to Critical Strike Multiplier
  Cursed enemies grant (65-600) Life when Killed
  Cursed enemies grant (25-80) Mana when Killed
  
  Additional Effects From 1-20% Quality:
  Cursed Enemies have a (0.25-5)% chance to grant a Power Charge when HitPlace into an item socket of the right colour to gain this skill. Right click to remove from a socket. could cause one hit to crit while the other doesn't.
• Area of effect: Modifiers to AoE affect both the initial impact and the aftershock, making both larger or smaller - more noticeably the aftershock, having a larger base radius.

Gem level progression

Level			Mana Cost	Damage Effectiveness	Attack Damage	Exp.	Total Exp.
1	28	67	10	143.7%	143.7%	0	0
2	31	73	10	147.6%	147.6%	199345	199345
3	34	79	10	151.5%	151.5%	285815	485160
4	37	85	11	155.5%	155.5%	401344	886504
5	40	92	11	159.5%	159.5%	554379	1440883
6	42	96	11	163.4%	163.4%	477437	1918320
7	44	100	11	167.4%	167.4%	583786	2502106
8	46	104	11	171.6%	171.6%	710359	3212465
9	48	109	11	175.8%	175.8%	1355511	4567976
10	50	113	12	180.1%	180.1%	1138877	5706853
11	52	117	12	184.5%	184.5%	1368233	7075086
12	54	121	12	189%	189%	1638338	8713424
13	56	125	12	193.6%	193.6%	1956648	10670072
14	58	130	12	198.3%	198.3%	3655184	14325256
15	60	134	13	203.2%	203.2%	3017327	17342583
16	62	138	13	208.1%	208.1%	7759995	25102578
17	64	142	13	213.3%	213.3%	15138193	40240771
18	66	146	13	218.4%	218.4%	26083825	66324596
19	68	151	13	223.8%	223.8%	62620247	128944843
20	70	155	13	229.3%	229.3%	211708088	340652931
21	72	159	14	234.8%	234.8%	—	—
22	74	—	14	240.5%	240.5%	—	—
23	76	—	14	246.3%	246.3%	—	—
24	78	—	14	252.4%	252.4%	—	—
25	80	—	14	258.5%	258.5%	—	—
26	82	—	14	264.8%	264.8%	—	—
27	84	—	15	271.2%	271.2%	—	—
28	86	—	15	277.7%	277.7%	—	—
29	88	—	15	284.5%	284.5%	—	—
30	90	—	15	291.4%	291.4%	—	—
31	91	—	15	301.1%	301.1%	—	—
32	92	—	15	304.8%	304.8%	—	—
33	93	—	15	308.5%	308.5%	—	—
34	94	—	15	312.2%	312.2%	—	—
35	95	—	16	316%	316%	—	—
36	96	—	16	319.8%	319.8%	—	—
37	97	—	16	323.6%	323.6%	—	—
38	98	—	16	327.5%	327.5%	—	—
39	99	—	16	331.5%	331.5%	—	—
40	100	—	16	335.5%	335.5%	—	—

Item acquisition

Earthquake can drop anywhere.

Recipes

Earthquake can be created from the following recipes:

Amount	Part	Description	Meta
6	The FoxThe Fox6Level 20 Gem"Masters of wit, strength and cunning. To survive the harsh winters, you must be like the fox." - Ezomyte Proverb	Random level 20 gem	A
3	Gemcutter's PromiseGemcutter's Promise3Gem Quality: +20%"I swore to use my position to help the people. What good is power when it just accumulates on the already-powerful?" - Erasmus, Imperial Gemcutter	Random gem with 20% quality	A
1	Gemcutter's IncubatorGemcutter's IncubatorStack Size: 10Adds an incubated Quality Gem item to an equippable item Item drops after killing {0} monstersRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.	Random gem with 1–20% quality	A
1	The VoidThe Void1Reach into the Void and claim your prize.	Random divination card set exchange	A

Quest reward

This item is given as a quest reward for the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
Sever the Right Hand Act 3

Vendor reward

This item can be bought at the listed NPC vendors, after completing the following quests:

Class →	Witch	Shadow	Ranger	Duelist	Marauder	Templar	Scion
Quest ↓
A Fixture of Fate Act 3 Siosa
Sever the Right Hand Act 3 Clarissa
Fallen from Grace Act 6 Lilly Roth

Related helmet enchantments

The following helmet enchantments affect Earthquake.

Note that helmet enchantments are no longer obtainable since version 3.23.0 and can only be obtained in permanent leagues as already enchanted items from before this patch.

Name		Labyrinth	Stats	Spawn Weighting
Enchantment Earthquake Damage 1	66	Merciless Labyrinth	25% increased Earthquake Damage	helmet 100
Enchantment Earthquake Damage 2	75	Eternal Labyrinth	40% increased Earthquake Damage	helmet 100
Enchantment Earthquake Damage per 0.1s Duration 1	66	Merciless Labyrinth	Earthquake deals 5% increased Damage per 0.1 seconds Duration	helmet 100
Enchantment Earthquake Damage per 0.1s Duration 2	75	Eternal Labyrinth	Earthquake deals 8% increased Damage per 0.1 seconds Duration	helmet 100
Enchantment Earthquake Duration 1	66	Merciless Labyrinth	20% reduced Earthquake Duration	helmet 0
Enchantment Earthquake Duration 2	75	Eternal Labyrinth	30% reduced Earthquake Duration	helmet 0
Enchantment Earthquake Area Of Effect 1	66	Merciless Labyrinth	16% increased Earthquake Area of Effect	helmet 100
Enchantment Earthquake Area Of Effect 2	75	Eternal Labyrinth	24% increased Earthquake Area of Effect	helmet 100

Alternate skill effects

Earthquake has the following alternate skill effects:

Item	Description
Crystal Earthquake EffectCrystal Earthquake EffectSkill Gem EffectYour Earthquake becomes a crystal effect.	Your Earthquake becomes a crystal effect.
Demonic Earthquake EffectDemonic Earthquake EffectSkill Gem EffectYour Earthquake becomes a Demonic Effect.	Your Earthquake becomes a Demonic Effect.
Gore Earthquake EffectGore Earthquake EffectSkill Gem EffectYour Earthquake becomes a gory effect.	Your Earthquake becomes a gory effect.
Harmonious Earthquake EffectHarmonious Earthquake EffectSkill Gem EffectYour Earthquake becomes a Harmonious Effect.	Your Earthquake becomes a Harmonious Effect.

Version history

Version	Changes
3.25.0	Now has a Mana cost of 10 at gem level 1, scaling up to 13 at gem level 20 (previously 10 at all gem levels). Now has 143% Effectiveness of Base and Added Damage at gem level 1 (previously 85%), scaling up to 229% at gem level 20 (previously 150%).
3.23.0	Quality now causes the Aftershock to deal +0-30% more Damage with Hits and Ailments, instead of providing 0-20% increased Damage.
3.15.0	Now deals 150% of Base Damage, and has 150% Effectiveness of Added Damage at gem level 20 (previously 120%). Quality on the Phantasmal Earthquake Skill no longer grants “Increases and Reductions to Spell Damage also apply to Attack Damage from this Skill”. It now grants “Increases and Reductions to Spell Damage also apply to Attack Damage from this Skill at 0-50% of their value”.
3.11.0	The visual effects have been improved. Aftershocks no longer have added Attack Physical Damage. Aftershocks now deal 150% more Damage with hits and ailments. Can now be used while unarmed. The base radius of the initial hit is now 14 units (from 18). The Labyrinth helmet enchantments Earthquake duration can no longer be obtained, though existing versions are unaffected.
3.7.0	Now deals base damage equal to, and has an added damage effectiveness of, 85% at gem level 1 (from 90%), up to 120% at gem level 20 (from 109%). Aftershock now benefits from 30 to 46 added physical damage at gem level one, up to 169 to 254 at gem level 20. Now has an attack speed multiplier of 75%. Radius of the aftershock is now +2 units larger. Now gains 1% increased damage per 1% gem quality (rather than 1% increased physical damage).
3.5.0	Earthquake is no longer main hand only.
3.4.0	The aftershock now deals 70% (up from 50%) more damage with hits and ailments (as opposed to every form of damage) at all gem levels.
3.3.0	The base delay between the initial attack and the aftershock is now 1 second (down from 1.5 seconds). The aftershock now deals more damage as the gem levels, dealing 69% more damage at gem level 20 (up from 50%). Only uses main hand when dual-wielding. [Undocumented This change was not documented by any official sources. It was discovered through player testing or datamining.]
3.1.0	Radius has been increased from 25 to 28 for the second stage.
2.6.0	Earthquake's initial hit radius has been reduced from 20 to 18 units.
2.4.0	Aftershock damage has been reduced to 50% more at all Levels. Mana cost has been increased from 6 to 10. Aftershock area of effect has been reduced by 12%.
2.3.0	The Merciless Labyrinth Helmet enchantment for Earthquake duration is now 20% reduced duration.
2.2.0	Added to the game.