Arcane Ultimatum is an Arcane Enhancement that, upon performing a melee finisher kill, provides a chance to increase Warframe Armor for a short time.

Can be sold for Credits64.png 1,000.


Rank Chance Effect Duration
0 25% 200 8s
1 50% 400 15s
2 75% 600 23s
3 100% 800 30s
4 100% 1000 38s
5 100% 1200 45s


Awarded for capturing the Eidolon Gantulyst.

Operation: Scarlet Spear sold Arcane Ultimatum for Scarlet Credits2,000 Scarlet Credits.

Operation: Orphix Venom sold Arcane Ultimatum for Phasic Cells400 Phasic Cells.

Source Chance Expected Nearly Guaranteed
Arcane 5.29% 18 – 19 captures 127 ± 42 captures

All drop rates data is obtained from DE's official droptables.

Expected refers to total number of attempts a player can expect to need in order to receive at least one of each drop associated with the respective values.
Nearly Guaranteed refers to the total number of attempts a player needs to obtain a 99%, 99.9%, and 99.99% probability to receive at least one of each drop associated with the respective values.

For more detailed definitions and information on how these number were obtained, visit here.


  • The additional armor is unaffected by mods. For example, a ChromaIcon272.png Chroma with a max rank Mod TT 20px.png Steel Fiber, and an active rank-5 ArcaneUltimatum64x.png Arcane Ultimatum will have an armor rating of:
Armor = Base Armor × (1 + Armor Mod) + Arcane Ultimatum
Armor = 350 × (1 + 1.1) + 1200
Armor = 1935
  • Mercy kills will activate the effect.
  • The effect can be activated by the user's Sunika or Sahasa Kubrow performing a finisher attack via their unique precepts.
  • Duration can be refreshed.


  • This arcane was originally dropped in The Jordas Verdict. Following Update 22.14 (2018-03-01), all Trial missions were retired from the game and the arcane drops in turn were moved to the Eidolons instead.

Patch History[]

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.