Arcane Ultimatum is an Arcane Enhancement that, upon performing a Finisher kill, increases the Warframe's Armor for 45 seconds.

Can be sold for Credits64 1,000.


Rank Flat Armor Bonus
0 +200
1 +400
2 +600
3 +800
4 +1000
5 +1200


Item Source Chance Expected Nearly Guaranteed
ArcaneUltimatum Veil Proxima Orphix / C 2.82% ~ 35 C Rotations 241 ± 80 C Rotations
ArcaneUltimatum Neptune Proxima Orphix / C 3.45% ~ 28 C Rotations 196 ± 65 C Rotations
ArcaneUltimatum Tier 9 The Circuit (Normal) 4% ~ 25 A Rotations 169 ± 56 A Rotations
ArcaneUltimatum Tier 1 The Circuit (Normal) 0.67% ~ 149 A Rotations 1027 ± 342 A Rotations
ArcaneUltimatum Tier 3 The Circuit (Normal) 0.67% ~ 149 A Rotations 1027 ± 342 A Rotations
ArcaneUltimatum Eidolon Gantulyst Capture 5.29% ~ 18 Kills 127 ± 42 Kills

All drop rates data is obtained from DE's official drop tables. See Mission Rewards#Standard Missions for definitions on reward table rotations.
For more detailed definitions and information, visit here.



  • The additional armor is unaffected by mods. For example, a ChromaIcon272 Chroma with a max rank Mod TT 20px Steel Fiber, and an active rank-5 ArcaneUltimatum Arcane Ultimatum will have an armor rating of:
Armor = Base Armor × (1 + Armor Mod) + Arcane Ultimatum
Armor = 350 × (1 + 1.1) + 1200
Armor = 1935
  • Parazon Mercy kills will activate the effect.
  • Duration can be refreshed.


Patch History[]

Fixed Ash’s Blade Storm not triggering Arcanes with the “On Finisher Kill” condition.

Update 35.5 (2024-03-27)

  • Fixed context action Finishers not triggering “On Finisher Kill” Arcanes (Arcane Ultimatum).

Update 34.0 (2023-10-18)

  • Fixed several cases where the game was not recognizing a Ground Finisher for the activation of Mods and Arcanes. The intent is that Ground Finishers, Stealth Finishers and Parazon Finishers should be equivalent unless explicitly stated otherwise:
    • Arcane Ultimatum will now activate from Ground Finishers

Hotfix 31.7.2 (2022-08-17)

  • Fixed Arcane Ultimatum not proccing off Ash's Bladestorm.

Update 31.6 (2022-06-09)


We’ve adjusted the values of older Arcanes with the goal of making lower rank Arcanes more viable, and more desirable while collecting as a result. In short, there are three stats that each Arcane tends to have (speaking generally) -- for example, a percentage chance, a stat buff, and the duration of the buff.

Certain Arcanes increase all of these stats per rank (making them scale exponentially), but we are changing it so that only one stat is affected by rank (making it scale linearly). The other stats will now be at the max-rank value regardless of the Arcane Rank, thereby buffing lower-rank Arcanes as a result.

Arcane Ultimatum

On Finisher Kill: 100% (was 25%) chance for +200/1200 Armor for 45s (was 8s)

  • Now that the chance is guaranteed, the new description is “On Finisher Kill: +200/1200 Armor for 45s”

Update 22.12 (2018-02-09)

  • Armor applied is now an absolute amount (instead of relative) with a base value of 150 with a duration of 5 seconds at base rank.

Update 17.9.1 (2015-10-29)

  • Introduced with The Jordas Verdict.