Tectonic Slam

Tectonic SlamFire, Attack, AoE, Slam, Melee
Level: (1-20)
Cost: (9-13) Mana
Attack Speed: 80% of base
Attack Damage: (295-542)% of base
Effectiveness of Added Damage: (295-542)%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.60% of Physical Damage Converted to Fire Damage
5% more Area of Effect per Endurance Charge
30% fissure branching chance
+5% fissure branching chance per Endurance Charge

Additional Effects From 1-20% Quality:
+(1.5-30)% Fissure branching chancePlace 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/SkillGemTectonicSlam

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, travel skills, retaliation skills or triggered skills.Supported Skills Repeat 2 additional times
Supported Skills have (35-44)% more Melee Attack Speed
Supported Skills deal (30-20)% less Attack Damage
First Repeat of Supported Skills deals 22% more Damage
Second Repeat of Supported Skills deals 44% more Damage

Additional Effects From 1-20% Quality:
Supported Skills deal (0.5-10)% increased Melee 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., every slam counts towards the counter.

The conditional modifiers per endurance charge, i.e., fissure branching chance per Endurance Charge and more Area of Effect per Endurance Charge, affect each slam and are independent of whether or not a charge is consumed or can be consumed.

Gem level progression

Level			Mana Cost	Damage Effectiveness	Attack Damage	Exp.	Total Exp.
1	28	67	9	295.1%	295.1%	0	0
2	31	73	9	305.3%	305.3%	199345	199345
3	34	79	10	315.6%	315.6%	285815	485160
4	37	85	10	326.4%	326.4%	401344	886504
5	40	92	10	337.4%	337.4%	554379	1440883
6	42	96	10	348.4%	348.4%	477437	1918320
7	44	100	10	359.5%	359.5%	583786	2502106
8	46	104	11	371.1%	371.1%	710359	3212465
9	48	109	11	383%	383%	1355511	4567976
10	50	113	11	395.4%	395.4%	1138877	5706853
11	52	117	11	408.1%	408.1%	1368233	7075086
12	54	121	11	421.1%	421.1%	1638338	8713424
13	56	125	11	434.6%	434.6%	1956648	10670072
14	58	130	12	448.6%	448.6%	3655184	14325256
15	60	134	12	463.1%	463.1%	3017327	17342583
16	62	138	12	477.9%	477.9%	7759995	25102578
17	64	142	12	493.2%	493.2%	15138193	40240771
18	66	146	12	509%	509%	26083825	66324596
19	68	151	12	525.3%	525.3%	62620247	128944843
20	70	155	13	542.2%	542.2%	211708088	340652931
21	72	159	13	559.6%	559.6%	—	—
22	74	—	13	577.4%	577.4%	—	—
23	76	—	13	595.9%	595.9%	—	—
24	78	—	13	615%	615%	—	—
25	80	—	13	634.6%	634.6%	—	—
26	82	—	14	655%	655%	—	—
27	84	—	14	675.9%	675.9%	—	—
28	86	—	14	697.5%	697.5%	—	—
29	88	—	14	719.8%	719.8%	—	—
30	90	—	14	742.7%	742.7%	—	—
31	91	—	14	776.2%	776.2%	—	—
32	92	—	14	788.5%	788.5%	—	—
33	93	—	14	801.1%	801.1%	—	—
34	94	—	15	813.9%	813.9%	—	—
35	95	—	15	826.8%	826.8%	—	—
36	96	—	15	840%	840%	—	—
37	97	—	15	853.4%	853.4%	—	—
38	98	—	15	866.9%	866.9%	—	—
39	99	—	15	880.8%	880.8%	—	—
40	100	—	15	894.8%	894.8%	—	—

Item acquisition

Tectonic Slam can drop anywhere.

Recipes

Tectonic Slam 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 Tectonic Slam.

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 Tectonic Slam Area Of Effect 1	66	Merciless Labyrinth	Tectonic Slam has 16% increased Area of Effect	helmet 100
Enchantment Tectonic Slam Area Of Effect 2	75	Eternal Labyrinth	Tectonic Slam has 24% increased Area of Effect	helmet 100
Enchantment Tectonic Slam Chance For Side Crack 1	66	Merciless Labyrinth	Tectonic Slam has +12% fissure branching chance	helmet 100
Enchantment Tectonic Slam Chance For Side Crack 2	75	Eternal Labyrinth	Tectonic Slam has +20% fissure branching chance	helmet 100
EnchantmentTectonicSlamChanceToNotConsumeCharge1	66	Merciless Labyrinth	Tectonic Slam has +12% fissure branching chance	helmet 0
EnchantmentTectonicSlamChanceToNotConsumeCharge2	75	Eternal Labyrinth	Tectonic Slam has +20% fissure branching chance	helmet 0
Enchantment Tectonic Slam Damage 1	66	Merciless Labyrinth	Tectonic Slam deals 25% increased Damage	helmet 100
Enchantment Tectonic Slam Damage 2	75	Eternal Labyrinth	Tectonic Slam deals 40% increased Damage	helmet 100

Video

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Alternate skill effects

Tectonic Slam has the following alternate skill effects:

Item	Description
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
3.25.0	Now has a Mana cost of 9 at gem level 1, scaling up to 13 at gem level 20 (previously 10 at all gem levels). Now has 295% Effectiveness of Base and Added Damage at gem level 1 (previously 180%), scaling up to 542% at gem level 20 (previously 275%).
3.23.0	Quality now provides +0-30% Fissure branching chance, instead of 0-10% increased Area of Effect.
3.15.0	Now deals 275% of Base Damage, and has 275% Effectiveness of Added Damage at gem level 20 (previously 220%).
3.11.0	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.
3.7.0	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%.
3.5.0	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%)
3.2.0	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.