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Tainted Shell
Warframe · Mod

Tainted Shell

Shotgun mod that increases Accuracy while reducing Fire Rate.

Released Oct 9, 2013

Tainted Shell provides up to +77% Accuracy and −55% Fire Rate. Consider it when increased shotgun accuracy is worth a substantial reduction in firing rate; the two effects rise together with rank.

TypeShotgunPolarityvazarinMax rank10Base drain4VariantStandardRarityRare
Tainted Shell GUIDE

Understand Tainted Shell

Useful when…

  • Improve shotgun Accuracy when its firing pattern benefits from the bonus.
  • Use only when accepting the linked Fire Rate penalty is reasonable for the weapon.

Effect and rank scaling

At rank 0, Tainted Shell grants +7% Accuracy and −5% Fire Rate; at rank 5, +42% Accuracy and −30% Fire Rate; at rank 10, +77% Accuracy and −55% Fire Rate. It is a Rare, standard shotgun mod with Vazarin polarity and base drain 4.

wiki.warframe.com ↗

Investment and alternatives

The listed rank 9 to 10 step costs 15,360 Endo and 741,888 Credits for the final increase to +77% Accuracy and −55% Fire Rate. Accelerated Blast and Amalgam Shotgun Barrage instead add Fire Rate, with Amalgam Shotgun Barrage also listing Revive Speed. Critical Deceleration adds Critical Chance while reducing Fire Rate. These candidates have different effects and do not remove Tainted Shell’s accuracy-versus-rate tradeoff.

wiki.warframe.com ↗

Practical limitation

The Accuracy gain is paired with reduced Fire Rate at every listed rank. Evaluate both stats together before spending a standard shotgun slot and capacity; no incompatible mod names are listed.

Limitations and tradeoffs

  • Accuracy increases together with a Fire Rate penalty, reaching −55% at maximum rank.
  • Maximum-rank investment has a high listed Endo and Credit cost.

Common mistakes to avoid

  • Evaluating the Accuracy bonus without accounting for the Fire Rate penalty.
  • Assuming rank increases Accuracy alone; the negative Fire Rate effect scales with it.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0+7% Accuracy
-5% Fire Rate
400
1+14% Accuracy
-10% Fire Rate
5301,449
2+21% Accuracy
-15% Fire Rate
6904,347
3+28% Accuracy
-20% Fire Rate
721010,143
4+35% Accuracy
-25% Fire Rate
845021,735
5+42% Accuracy
-30% Fire Rate
993044,919
6+49% Accuracy
-35% Fire Rate
101,89091,287
7+56% Accuracy
-40% Fire Rate
113,810184,023
8+63% Accuracy
-45% Fire Rate
127,650369,495
9+70% Accuracy
-50% Fire Rate
1315,330740,439
10+77% Accuracy
-55% Fire Rate
1430,6901,482,327

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

Tainted Shell — 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 ↗

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