Arcane Ultimatum

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

Can be sold for 1,000 Credits 1,000.

Effect

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

Acquisition

Awarded for capturing the Eidolon Gantulyst.
Dropped in Rotation C of Orphix Neptune Proxima or Veil Proxima missions.

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

All drop rates data is obtained from DE's official drop tables stored on Module:DropTables/data. See Mission Rewards#Standard Missions for definitions on reward table rotations.
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History

Arcane Ultimatum was first introduced in the Trial mission The Jordas Verdict, which was retired in Update 22.14 (2018-03-01).
The Operation: Scarlet Spear event sold Arcane Ultimatum from Little Duck for 2,000 Scarlet Credits.
The Operation: Orphix Venom event sold Arcane Ultimatum from Father for 400 Phasic Cells.

Notes

The additional armor is unaffected by mods. For example, a Chroma with a max rank Steel Fiber, and an active rank-5 Arcane Ultimatum will have an armor rating of:

Armor = Base Armor \times (1 + Armor Mod) + Arcane Ultimatum

Armor = 350 \times (1 + 1.1) + 1200

Armor = 1935

Parazon Mercy kills will activate the effect.
Duration can be refreshed.

Tips

The following Warframe abilities can trigger finishers or at least open enemies up to them:
- Ash Blade Storm
- Equinox Rest & Rage in Night Form
- Excalibur Radial Blind
- Gara's Passive
- Inaros Desiccation and Sandstorm
- Lavos Ophidian Bite
- Valkyr's Paralysis
The following Companions can trigger finishers:
- Medjay Predasite's Infectious Bite and Paralytic Spores
- Sunika Kubrow's Savagery
- Sahasa Kubrow's Ferocity

Patch History

Hotfix 36.0.4 (2024-06-26)

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)

ARCANE STAT CHANGES PER RANK

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.