Pure Fiction 4 DoT Guide: 60K Points with Serval & Sampo (No Kafka)

Pure Fiction Stage 4 (Nov 24, 2025 - Jan 5, 2026) introduces DoT Whimsicality mechanics rewarding damage-over-time strategies. This guide shows F2P players how to hit 60,000 points using 4-star characters Serval and Sampo, leveraging the Grit system that accumulates 2 points per DoT and triggers Surging Grit buffs at 100 stacks. Earn 800 Stellar Jade without premium units.

Author: BitTopup Publish at: 2025/12/20

Understanding DoT Whimsicality Turbulence Mechanics

Every DoT applied generates 2 Grit Value. At 100 stacks, Surging Grit triggers—instantly detonating all DoTs at 100% damage while debuffing enemies with +50% damage received, -35% damage dealt, +50% speed.

Echo Enigma: Enemies gain 1 stack on entry and per action (max 10, lasts 3 turns). Triggers Wind DoT each turn. Surging Grit adds 5 stacks instantly.

Exposition Buff: Active during Surging Grit only. Ignores 20% All-Type RES for DoTs. Grants 1% damage per DoT instance (max 99 stacks).

Scoring: 60,000 points per stage for max rewards. Full 12-star clear = 800 Stellar Jade + materials.

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Enemy Lineup Per Stage

Honkai Star Rail Pure Fiction Phase 4 enemy lineup screenshot showing Cocolia and waves

Stage 4 Node 1: Cocolia (Ice/Lightning/Fire/Physical weak). Wave 1: Fictional Ensemble, Lordly Trashcan, Memory Zone Meme, Automation Beetle. Wave 2: Lady of Crashing Waves (gains turns after attacks—exploit with AoE).

Stage 4 Node 2: First Genius, Entelechy, Zandar (Lightning/Fire/Ice/Physical weak).

Why Serval and Sampo Work

Serval (Lightning Erudition):

  • Skill: 70% ATK primary + 30% adjacent, 80% Shock chance (40% ATK DoT, 2 turns)
  • Ultimate: 50% ATK random hits, 100% Shock (50% ATK DoT, 3 turns)
  • Base stats (Lv80): 917 HP, 652 ATK, 374 DEF, 104 SPD

Sampo (Wind Nihility):

  • Applies Wind Shear DoT independently from Shock
  • Dual DoT = 4 Grit per enemy per turn
  • Base stats (Lv80): 1,023 HP, 617 ATK, 396 DEF, 102 SPD

Synergy: Shock + Wind Shear stack Exposition twice as fast. With Echo Enigma's auto Wind DoT, enemies take 3+ DoT instances per turn, rapidly hitting 99-stack cap.

F2P Advantage: Frequent multi-target DoT application generates Grit faster than Kafka's detonation style. Both available through standard banner/early game.

Optimal Serval Build

Honkai Star Rail Serval optimal relics and ornaments for Pure Fiction build

Target Stats: 135-160 SPD, 70% CRIT Rate, 140% CRIT DMG

Relics:

  • 4pc Pioneer Diver of Dead Waters (damage to debuffed enemies + CRIT Rate)
  • 2pc Firmament Frontline Glamoth (12% ATK at 135+ SPD, +6% Ult/Skill DMG at 160+)

Main Stats:

  • Body: CRIT Rate/DMG
  • Feet: SPD
  • Sphere: ATK%
  • Rope: ATK% or Energy Regen

Substats: SPD (to breakpoint) > CRIT Rate (to 70%) > CRIT DMG > ATK% > Effect Hit Rate

Light Cones:

  • F2P: The Seriousness of Breakfast (12% DMG, 4 Energy on kill)
  • Alt: Today Is Another Peaceful Day (20% DMG based on max Energy)

Traces: Ultimate > Skill > Basic. Prioritize Galvanic (+20% Shock DMG with 3+ debuffs) and Charge (10 Energy on kill).

Eidolons: E1 best (+20% CRIT vs Shocked enemies), but E0 works fine.

Complete Sampo Build

Target Stats: 67% Effect Hit Rate, ~120 SPD

Relics:

  • 4pc Prisoner in Deep Confinement (12% ATK, ignore 12% DEF, +25% DoT DMG at 3 stacks)

Main Stats:

  • Body: Effect Hit Rate or CRIT Rate
  • Feet: SPD
  • Sphere: ATK%
  • Rope: ATK% or Energy Regen

Substats: Effect Hit Rate (to 67%) > SPD (to ~120) > ATK% > CRIT Rate > CRIT DMG

Light Cones:

  • Best: Eyes of the Prey (Effect Hit Rate + 24% DoT DMG at S5)
  • Alt: Fermata (16% DMG to Shocked/Wind Sheared enemies)

Rotation: Ultimate at wave start for AoE Wind Shear, then Skills to maintain. Refresh DoTs 1-2 turns before Surging Grit triggers.

Team Compositions

F2P First Half: Serval, Sampo, Asta, Trailblazer Ice

Honkai Star Rail F2P team guide with Serval, Sampo, Asta, Trailblazer Ice

Asta: ATK% buffs, Speed boost, Fire coverage Trailblazer Ice: Taunt tank, shields, Ice coverage

Alternatives:

  • Guinaifen replaces Sampo (Fire DoT, better vs Fire-weak)
  • Pela for DEF shred (40% reduction)
  • Tingyun for Energy battery
  • Lynx/Natasha for healing

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Stage Clear Strategy

Stages 1-2:

  1. Serval Skill on cluster for multi-Shock
  2. Sampo Ultimate for AoE Wind Shear
  3. Asta Skill for stacks
  4. Trailblazer Ice Skill for Taunt/shields

Monitor Grit counter. Time DoT applications for max coverage at 100 stacks.

Stages 3-4:

  • Apply DoTs to all enemies before focusing priority targets
  • Exploit Lady of Crashing Waves: AoE ultimates grant her turns = more Echo Enigma + DoT ticks
  • Use Speed buffs to manipulate turn order
  • Ultimate during Surging Grit for +50% damage received window

Skill Points: Maintain 3-5 buffer. Supports use Basic Attacks to conserve. Serval/Sampo prioritize Skills for DoT coverage.

Advanced Mechanics

DoT Damage Calc: Base multiplier × ATK × damage bonuses (DMG%, CRIT, RES PEN, DEF shred)

Exposition Scaling: At 99 stacks = 99% damage increase (nearly doubles DoT output)

Cinnabar Inscription: 3% damage received per Echo Enigma stack (30% at cap)

Speed Tuning: DoTs tick at enemy turn start. Faster enemies = more ticks. Apply DoTs right before fast enemies act.

Turn Order: Supports > DoT Applicators > Sustain. Asta acts first for buffs.

Common Mistakes to Avoid

❌ Single-target focus (spread DoTs for Grit/Exposition) ❌ Skipping Effect Hit Rate (causes failed applications) ❌ Poor skill point management (keeps DPS from using Skills) ❌ Missing speed breakpoints (135/160 = extra turns) ❌ Wrong turn order (buffs after DPS wastes uptime) ❌ Using ultimates before Surging Grit (wastes instant detonation)

Resource Investment Priority

1. Serval: Level 80, Ultimate/Skill to 8-10, 135+ SPD, 70/140 CRIT 2. Sampo: Level 70+, traces to 6-8, 67% EHR, ~120 SPD 3. Asta: Level 60/70, Ultimate to 6+, SPD focus

Farming:

  • Serval: Cavern of Corrosion: Path of Gelid Wind (Pioneer Diver)
  • Sampo: Cavern of Corrosion: Path of Dreamdive (Prisoner)
  • Ornaments: Simulated Universe World 7 (Glamoth)

Stellar Jade Income: 800 per Pure Fiction cycle + 800 Memory of Chaos = 1,600 biweekly. F2P earns 50-60 pulls per patch.

FAQ

Can you clear without Kafka/Black Swan? Yes. Serval + Sampo generate Grit faster through frequent multi-target DoT application. F2P team (Serval/Sampo/Asta/Trailblazer Ice) achieves 60,000 points with proper builds.

Best Serval build? 135-160 SPD, 70% CRIT Rate, 140% CRIT DMG. 4pc Pioneer Diver + Glamoth ornaments. SPD Feet, ATK% Sphere, CRIT Body. Ultimate/Skill to 8-10.

How much Stellar Jade? 800 per full clear (12 stars). Refreshes every 2-3 weeks.

Serval speed target? Minimum 135 SPD (first breakpoint). Optimal 160 SPD (max turns).

Guinaifen vs Sampo? Comparable performance. Guinaifen better vs Fire-weak (synergizes with Asta). Sampo applies Wind Shear faster for Grit generation.

What's Surging Grit? Triggers at 100 Grit stacks. Instantly detonates all DoTs at 100% damage. Enemies take +50% damage, deal -35% damage, gain +50% speed. Lasts until Grit depletes.


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