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Fortifying Fire
Warframe · Mod

Fortifying Fire

Plexus critical-hit shield recovery mod

Released Mar 19, 2021

Fortifying Fire replenishes a portion of shields when a critical hit occurs. Its usefulness depends on critical hits occurring in the Railjack setup.

TypePlexusPolarityvazarinMax rank5Base drain6VariantStandardRarityRare
Fortifying Fire GUIDE

Understand Fortifying Fire

Useful when…

  • Recover a listed portion of shields on critical hits.
  • Consider it with turret use that can produce critical hits.

Effect and trigger

The effect is triggered on critical hit. It replenishes 0.5% of shields at rank 0, 2% at rank 3, and 3% at rank 5.

wiki.warframe.com ↗

Plexus fit and related mods

Fortifying Fire is a standard Plexus mod with Vazarin polarity, base drain 6, and maximum rank 5. Predator increases turret critical chance, which may support the critical-hit trigger. Waveband Disruptor gives turret critical hits a chance to ignore enemy shields. Defensive Fire increases maximum shields per enemy killed for a limited time and up to a listed stack cap; it does not list on-critical-hit shield replenishment.

Ranking and listed sources

The mod reaches rank 5. Listed step examples include 30 Endo and 1,449 Credits for rank 0 to 1, and 480 Endo and 23,184 Credits for rank 4 to 5. The final step raises the listed replenishment from 2% at rank 3 to 3% at rank 5. Supplied drops list Orm Gox, Orm Harpi, Orm Weaver, Elite Orm Harpi, and Elite Orm Weaver variants; these entries do not establish current availability.

wiki.warframe.com ↗

Limitations and tradeoffs

  • Shield replenishment depends on critical hits.
  • The rank 4 to 5 step costs 480 Endo and 23,184 Credits for the increase to the listed 3% effect.

Common mistakes to avoid

  • Treating the replenishment as unconditional shield regeneration.
  • Confusing increased maximum shields with the on-critical-hit replenishment effect.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0ON CRITICAL HIT: Replenish 0.5% of Shields600
1ON CRITICAL HIT: Replenish 1% of Shields7301,449
2ON CRITICAL HIT: Replenish 1.5% of Shields8904,347
3ON CRITICAL HIT: Replenish 2% of Shields921010,143
4ON CRITICAL HIT: Replenish 2.5% of Shields1045021,735
5ON CRITICAL HIT: Replenish 3% of Shields1193044,919

These are listed mod effects and fusion costs, not final build damage. Matching and mismatched polarities change capacity. Totals assume starting at rank 0.

References and version

Game data version: Pinned public export

Fortifying Fire — WARFRAME Wiki ↗wiki.warframe.com ↗
Technical source data for verification

These machine-readable game records support the calculations and factual checks. The wiki references above are intended for reading.

Warframe Public Export ↗Raw game data (JSON) ↗wiki.warframe.com ↗

Original data record ↗

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Fusion cost and capacity

0Endo
0Credits
6Target slot drain
RankObserved effectDrainEndo from 0Credits from 0
0ON CRITICAL HIT: Replenish 0.5% of Shields600
1ON CRITICAL HIT: Replenish 1% of Shields7301,449
2ON CRITICAL HIT: Replenish 1.5% of Shields8904,347
3ON CRITICAL HIT: Replenish 2% of Shields921010,143
4ON CRITICAL HIT: Replenish 2.5% of Shields1045021,735
5ON CRITICAL HIT: Replenish 3% of Shields1193044,919

Slot polarity changes drain; fusion prices depend on mod rarity and family.

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