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Umbral Fiber is the Umbra variant of Mod TT 20px.png Steel Fiber, increasing a Warframe's armor and DmgTauSmall64.png Tau resistance to Sentients.

The other mods of this set are Mod TT 20px.png Umbral Intensify and Mod TT 20px.png Umbral Vitality.

Stats[]

This mod is part of a set, whose set bonus increases with each additional mod equipped from that set.

Umbral Set: Enhances the primary values of other mods in the set.

Rank Effect (Rank 1) Effect (Rank 2) Effect (Rank 3) DmgTauSmall64.png Tau Resist (Rank 1) DmgTauSmall64.png Tau Resist (Rank 2) DmgTauSmall64.png Tau Resist (Rank 3) Cost
0 +10% +12.5% +17.5% +1% +1.25% +1.75% 6
1 +20% +25% +35% +2% +2.5% +3.5% 7
2 +30% +37.5% +52.5% +3% +3.75% +5.25% 8
3 +40% +50% +70% +4% +5% +7% 9
4 +50% +62.5% +87.5% +5% +6.25% +8.75% 10
5 +60% +75% +105% +6% +7.5% +10.5% 11
6 +70% +87.5% +122.5% +7% +8.75% +12.25% 12
7 +80% +100% +140% +8% +10% +14% 13
8 +90% +112.5% +157.5% +9% +11.25% +15.75% 14
9 +100% +125% +175% +10% +12.5% +17.5% 15
10 +110% +137.5% +192.5% +11% +13.75% +19.25% 16
  • Note that "(Rank #)" refers to how many Umbral Set mods are equipped at once.

Notes[]

  • This mod is given at the penultimate mission of The Sacrifice, automatically ranked to level 5. Additional unranked mods can be bought from Cephalon Simaris for ReputationBlackx64.png 100,000.
  • Umbral Fiber is essentially the Mod TT 20px.png Steel Fiber mod with Legendary rarity. It is considered the same mod as its Common counterpart, and thus both mods cannot be equipped together.
  • The set bonus for Umbral Fiber increases the armor given by the mod by 25% of mod's value when using 2 set pieces and 75% when using 3. At max rank with full set bonus, Umbral Fiber grants an armor increase of 192.5%, and increases Sentient damage resistance by 19.25%.
    • Resistance values in the above stat table are calculated based on set bonus values, displayed values are rounded to the first decimal place ingame.
  • This mod outperforms Steel Fiber from rank 8 when using 2 set pieces and from rank 6 when using 3.
  • Umbra mods have a unique Umbra Pol.png polarity, whose matching polarity can currently only be found on Excalibur UmbraIcon272.png Excalibur Umbra, Exalted Umbra Blade, and the Skiajati.png Skiajati. It is possible to (re-)add a Umbra Pol.png polarity to a mod slot but only through the use of Umbral Forma, which can be obtained either directly, from Nightwave, or built with blueprints purchasable once every 8 weeks with Steel Essence. Given the extremely limited rate of acquisition, it is advised not to re-Forma any mod slot with an Umbra Pol.png polarity.

Patch History[]

Hotfix 30.0.6 (2021-04-20)

  • Fixed cases of Tau Resist not reducing damage against Sentients at all.

Update 28.0 (2020-06-11)

  • Added the Umbra mods to Simaris’ store Offerings (available after The Sacrifice Quest completion)

Update 23.2 (2018-08-02)

  • Fixed Mod sets (Umbral, etc) not updating all values when equipping/unequipping Mods.

Hotfix 23.0.1 (2018-06-15)

  • Mod is now link-able in chat. (Undocumented)

Update 23.0 (2018-06-15)

  • Introduced along with The Sacrifice quest.

Last updated: Hotfix 23.0.1 (2018-06-15)

See also[]

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