Mistburn Mortar (underwater)

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

77288

This skill is the underwater replacement for: Mistburn Mortar

“

0.25¼  

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 (2s): 262 Damage

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

 Burning (2s): 262 Damage

 Number of Targets: 5

 Pulses: 5

 Interval: 1 second

 Radius: 240

 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.

Notes

Anomaly:

In spite of the "This skill is unique per game mode" tooltip, the skill appears to be the same in all game modes.

Version history

For a detailed skill history, see here.

Patch	Changes
January 13, 2026	All artifacts now use the same weapon-type scaling when calculating damage, regardless of the weapon type equipped.
October 28, 2025	Visions of Eternity release: Mistburn Mortar has been added to the game.
August 19, 2025	Mistburn Mortar was available during the Visions of Eternity elite specialization Beta Event.