Mistburn Mortar

Offensive Artifact. Shoot an orb that explodes upon impact with the ground, creating a corrupted area that deals damage and applies conditions to enemies.

For a short time after using this skill, your strikes additionally inflict burning on enemies. — In-game description

Mistburn Mortar

   

Profession

Thief (skill list)

Specialization

Antiquary

Slot

Profession mechanic

Type

Offensive Artifact

Game link

API

77277

This skill has an underwater replacement: Mistburn Mortar (underwater)

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0.75¾  

Mistburn Mortar

Offensive Artifact. Shoot an orb that explodes upon impact with the ground, creating a corrupted area that deals damage and applies conditions to enemies.

For a short time after using this skill, your strikes additionally inflict burning on enemies.

 Damage: 202 (0.5)^?

 Burning (1s): 131 Damage

 Burning (6s): 786 Damage

₅ Mistburn Mortar (10s): Your strikes additionally inflict burning on enemies.

₂ Mistburn Mortar (10s): Your strikes additionally inflict burning on enemies.

 Burning (10.5½s): 197 Damage

 Burning (2s): 262 Damage

 Number of Targets: 5

 Pulses: 5

 Interval: 1 second

 Radius: 240

 Combo Field: Fire

 Range: 900

— In-game description

Related traits

Deadly Arts

• Exposed Weakness — Deal increased strike damage to your target for each unique condition on them.
• Improvisation — Use stolen skills twice. Reduce the cooldown of all equipped utility skills when you steal. Cooldown effect will only trigger if all utility slots are filled and if at least one of your active utility skills is on cooldown. Does not affect inactive sequence skills.

Antiquary

• Card Swap — Gain access to Reshuffle. Remove conditions from yourself whenever you reshuffle your artifacts or use an artifact skill.
• Prolific Plunderer — Gain an additional artifact slot. Whenever you pilfer, you gain an additional, random artifact. You can use one additional artifact when you pilfer with Skritt Swipe.
• Meticulous Custodian — Your artifacts have increased effectiveness. Beneficial artifact effects last longer.
• Exhilarating Ephemera — Gain increased damage for a period of time after using an artifact.
• Enterprising Aristocrat — Gain initiative and barrier whenever you use an artifact skill. You take reduced strike and condition damage whenever you have barrier.
• Possessive Hoarder — Artifacts grant boons to allies when used. Offensive and defensive artifacts grant different boons. Barrier granted through Magpie's Defense and Enterprising Aristocrat is now also granted to allies as well.

Version history

For a detailed skill history, see here.

Patch	Changes
April 14, 2026	Reduced the burning duration of the base version from 2 seconds to 1.5 seconds in PvE only. Reduced the burning duration of the traited version from 2.5 seconds to 2 seconds in PvE only. Reduced the burning duration granted by the effect from 2.5 seconds to 1 second in PvE only.
February 03, 2026	Reduced the effect stacks granted from 5 to 2 in PvP only.
January 13, 2026	All artifacts now use the same weapon-type scaling when calculating damage, regardless of the weapon type equipped. Reduced the burning inflicted by additional strikes from 3 seconds to 2.5 seconds in PvE only.
December 09, 2025	Reduced the burning duration caused by the trait-enhanced version of this skill from 3 seconds to 2.5 seconds in all game modes. Reduced the burning duration from this skill's beneficial effect from 6 seconds to 3 seconds in PvE only.
October 28, 2025	Visions of Eternity release: Mistburn Mortar has been added to the game. In addition to its previous effects, for a short period of time after using this skill, your next five strikes additionally inflict burning on enemies. Reduced the burning duration from 6 seconds to 2 seconds in PvE only.
August 19, 2025	Mistburn Mortar was available during the Visions of Eternity elite specialization Beta Event.