Tectonic Slam

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Tectonic SlamFire, Attack, AoE, Slam, Melee
Level: (1-20)
Cost: 10 Mana
Attack Speed: 80% of base
Attack Damage: (180-275)% of base
Effectiveness of Added Damage: (180-275)%
Requires Level 28Slam the ground, unleashing a fiery fissure in front of you, dealing area damage and randomly releasing a number of smaller fissures branching off from it. Consume an Endurance Charge every third time you slam the ground with this skill. Requires a Mace, Sceptre, Sword, Axe, Staff, or Unarmed.Per 1% Quality:1Superior2Anomalous3Divergent4Phantasmal0.5% increased Area of Effect3% increased Burning Damage
1% chance to Ignite enemies
0.1% of Fire Damage Leeched as Life1% increased Fire Damage
+5% fissure branching chance per Endurance Charge
60% of Physical Damage Converted to Fire Damage
5% more Area of Effect per Endurance Charge
30% fissure branching chance
Place into an item socket of the right colour to gain this skill. Right click to remove from a socket.
Tectonic Slam skill icon.pngTectonic Slam inventory icon.png
Area level: 28
Vendor Prices
Normal1x Orb of Chance
Vendor Offer
1x Scroll Fragment
Item class: Active Skill Gems
Metadata ID: Metadata/Items/Gems/SkillGemTectonicSlam

Tectonic Slam skill screenshot.jpg

Tectonic Slam is an attack skill that slams the ground in front of the player, dealing area of effect damage in a cone, with the area scaling with your Endurance charges.

Skill functions and interactions

Endurance charge consumption effect: When you have a number of Endurance charges greater than your minimum endurance charges, every third slam will consume one. If your attack repeats, such as by using Multistrike SupportMultistrike SupportAttack, Melee, Support
Icon: 3
Level: (1-20)
Cost & Reservation Multiplier: 150%
Requires Level 38Supports melee attack skills, making them repeat twice when used, targeting a random enemy each time. Cannot support Vaal skills, channelling skills or triggered skills.Per 1% Quality:1Superior2Anomalous3DivergentSupported Skills deal 0.5% increased Melee Physical DamageSupported Skills have 1% reduced Attack Speed
Supported Skills have 1% increased Area of Effect per Repeat
Supported Skills have 0.5% increased Attack Speed
Supported Skills Repeat 2 additional times
Supported Skills have (35-44)% more Melee Attack Speed
First Repeat of Supported Skills deals 22% more Damage
Second Repeat of Supported Skills deals 44% more Damage
Supported Skills deal (30-20)% less Attack Damage
This 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 Active Skill Gem you wish to augment. Right click to remove from a socket.
, every slam counts towards the counter.

Gem level progression

LevelRequired LevelRequired StrengthDamage
Exp.Total Exp.

Item acquisition

Tectonic Slam can drop anywhere.


Tectonic Slam can be created from the following recipes:

8Dying AnguishDying Anguish8Level 19 Gem
Alternate Quality: +19%
Moribund, he gazed upon the journey taken as blood trickled down his chin. His eye closed on the city ahead that he would never call home.
Random level 19 gem with 19% alternative qualityA
1Gemcutter's IncubatorGemcutter's IncubatorAdds an incubated Quality Gem item to an equippable item
Item drops after killing # monsters
Quality GemRight click this item then left click an item to apply it. The Incubated item drops after killing a specific number of monsters.
Random superior gemA
6The 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 gemA
3Gemcutter'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 superior gem with 20% qualityA
1The VoidThe Void1Reach into the Void and claim your prize.Random divination card set exchangeA

Quest reward

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

Class →WitchShadowRangerDuelistMarauderTemplarScion
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 →WitchShadowRangerDuelistMarauderTemplarScion
Quest ↓
A Fixture of Fate
Act 3
Sever the Right Hand
Act 3
Fallen from Grace
Act 6
Lilly Roth

Related helmet enchantments

The following helmet enchantments affect Tectonic Slam.

NameFor generated item/monster modifiers the minimum item/monster level respectively. Some generation types may not require this condition to be met, however item level restrictions may be raised to 80% of this value.StatsSpawn Weighting
Enchantment Tectonic Slam Area Of Effect 166Tectonic Slam has 16% increased Area of Effecthelmet 100
default 0
Enchantment Tectonic Slam Area Of Effect 275Tectonic Slam has 24% increased Area of Effecthelmet 100
default 0
Enchantment Tectonic Slam Chance For Side Crack 166Tectonic Slam has +12% fissure branching chancehelmet 100
default 0
Enchantment Tectonic Slam Chance For Side Crack 275Tectonic Slam has +20% fissure branching chancehelmet 100
default 0
Enchantment Tectonic Slam Damage 166Tectonic Slam deals 25% increased Damagehelmet 100
default 0
Enchantment Tectonic Slam Damage 275Tectonic Slam deals 40% increased Damagehelmet 100
default 0


Alternate skill effects

Tectonic Slam has the following alternate skill effects:

Celestial Tectonic Slam EffectCelestial Tectonic Slam EffectSkill Gem EffectYour Tectonic Slam becomes a Celestial Effect.Your Tectonic Slam becomes a Celestial Effect.

Version history

Version Changes
  • Now deals 275% of Base Damage, and has 275% Effectiveness of Added Damage at gem level 20 (previously 220%).
  • The visual effects have been improved.
  • No longer has a chance to consume endurance charges per attack to create a Charged Slam.
  • Now consumes an endurance charge every third time you create a fissure, and gains 5% more area of effect and +5% branching fissure chance per endurance charge.
  • The spread of fissures has been partially-normalised, ensuring both sides of the main fissure will get at least one branching fissure.
  • Now deals base damage and has an added Damage effectiveness of 180% at gem level 1 (from 170%), up to 220% at gem level 20 (from 200%).
  • The Labyrinth helmet enchantments Charged Slam chance for Tectonic Slam can no longer be obtained. Existing versions of this enchantment now grant extra chance for branching fissures.
  • Now deals base damage equal to, and has an added damage effectiveness of, 170% at gem level 1 (from 130%), up to 200% at gem level 20 (from 160%).
  • The length of the primary fissure is now 36 (from 32).
  • The length of the secondary fissures is now 15 (from 22).
  • The width of the first secondary fissures is now 7 (from 8).
  • Now has an attack speed multiplier of 80%.
  • Charged Slam (which typically consumes an Endurance Charge) now deal 60% more damage (up from 18%).
  • Now has a 35% chance to consume an Endurance Charge to create a Charged Slam (down from 100%)
  • Added a new Strength Skill Gem - Tectonic Slam: Slam the ground with your weapon, unleashing a fiery fissure in front of you, dealing area damage and releasing a random number of smaller fissures branching off from it. If you have Endurance Charges, one will be consumed, maximising the number of fissures. Requires a Mace, Sword, Axe, Staff, or Unarmed.


ru:Тектонический удар