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The Relentless Lost
Warframe · Mod

The Relentless Lost

Xaku augment mod

Released Nov 11, 2021

The Relentless Lost grants Ability Strength and Ability Efficiency when The Lost is cast, stacking up to three times. Consider it for a Xaku setup that can use those gains while varying casts to avoid its stated reset condition.

TypeXakuPolarityzenurikMax rank3Base drain6VariantStandardRarityRare
The Relentless Lost GUIDE

Understand The Relentless Lost

Useful when…

  • Consider it when you want the listed Strength and Efficiency gains from casting The Lost.
  • Account for the reset: casting the same ability back-to-back resets the effect.

Effect and reset condition

At rank 0, the listed gain is 5% Ability Strength and 6% Ability Efficiency per cast; at rank 2 it is 25% and 12%; at rank 3 it is 35% and 15%. The effect stacks up to three times. Casting the same ability back-to-back resets the effect. No stack duration is specified.

wiki.warframe.com ↗

Slot and fit

This Rare Xaku mod uses a standard slot, has Zenurik polarity and base drain 6, and can be ranked to 3. Its listed augment effect is tied to casting The Lost. The supplied details do not specify a broader set of qualifying casts or name any incompatible mods.

Rank investment

The listed next-rank fusion examples cost 30, 60, and 120 Endo, plus 1,449, 2,898, and 5,796 Credits. Rank 3 raises the per-cast bonus from rank 2’s 25% Strength and 12% Efficiency to 35% and 15%. Whether that increase is worth the final rank depends on how much the added listed bonus matters to your setup.

wiki.warframe.com ↗

Other Xaku augment effects

Vampiric Grasp heals Xaku by 25 when a stolen weapon damages an enemy affected by The Lost: Gaze or The Vast Untime. Untime Rift connects to enemies suffering Void Status within 15 m, doubles debuffs applied by The Vast Untime, and maintains Void Status. Those stated effects serve different purposes from The Relentless Lost’s Strength and Efficiency gains.

Limitations and tradeoffs

  • It occupies a standard Xaku mod slot and has base drain 6.
  • Casting the same ability back-to-back resets the effect; no stack duration is specified.

Common mistakes to avoid

  • Assuming the effect has a duration; none is specified.
  • Assuming casts beyond the stated The Lost wording qualify, or overlooking that casting the same ability back-to-back resets the effect.

Effects and reference details

Rank effects and investment

RankListed effectsUnpolarized drainTotal Endo from rank 0Total Credits from rank 0
0The Lost Augment: The Lost gains 5% Ability Strength and 6% Ability Efficiency when cast. The effect stacks up to 3x. Casting the same ability back-to-back resets the effect.600
1The Lost Augment: The Lost gains 15% Ability Strength and 9% Ability Efficiency when cast. The effect stacks up to 3x. Casting the same ability back-to-back resets the effect.7301,449
2The Lost Augment: The Lost gains 25% Ability Strength and 12% Ability Efficiency when cast. The effect stacks up to 3x. Casting the same ability back-to-back resets the effect.8904,347
3The Lost Augment: The Lost gains 35% Ability Strength and 15% Ability Efficiency when cast. The effect stacks up to 3x. Casting the same ability back-to-back resets the effect.921010,143

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

The Relentless Lost — 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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