Honkai Star Rail Version 4.2 brings a fresh Anomaly Arbitration rotation: Happiness Syntax. This phase introduces new enemy traits across all three Knight stages and a challenging King in Check final boss, the Illwish Archlotus.
This guide covers everything you need to clear the current cycle, from unlock requirements and stage-by-stage team recommendations to reward breakdowns and preparation tips for the upcoming Version 4.3 Starward Mode.
Trailblazers looking to expand their roster can pick up a discounted top-up from GamsGo to pull for key characters ahead of the challenge.

How to Unlock Anomaly Arbitration in HSR V4.2
To permanently unlock Anomaly Arbitration, complete the Adventure Mission Knot-Tier Saga. Trailblazers must first finish the Trailblaze Mission Trial of Equilibrium: Part Six and achieve a historical full-star record across all three Treasures Lightward modes.
Endgame Clear Prerequisites:
- Memory of Chaos: 3-star clear on Stage 12.
- Pure Fiction: 3-star clear on Stage 4.
- Apocalyptic Shadow: 3-star clear on Difficulty 4.
Once you've cleared these milestones, head over to the Astral Express Party Car and speak with the Voice of the Arbitrator to jump in. For Trailblazers who haven't met all the requirements yet, you can still try it in advance through the Finality's Vision feature.
Reset Schedule
Anomaly Arbitration introduces a new phase every six weeks. Phase resets land on Wednesdays, right after the Version Update Maintenance.
Next Reset Date: June 13, 2026 at 10:00 (Server Time).
All Anomaly Arbitration Stage Guides
The current Anomaly Arbitration phase for HSR Version 4.2 is Happiness Syntax. Jump to any stage below for detailed team comps and strategies.
| All Anomaly Arbitration Stage | |||
| Knight 1 | Knight 2 | Knight 3 | King |
Knight 1 Strategy and Best Teams
| Sparxie Team | ![]() Sparxie | ![]() Trailblazer | ![]() Tribbie / Sparkle | ![]() Huohuo / Dan Heng • PT |
| Silver Wolf LV.999 Team | ![]() Silver Wolf LV.999 | ![]() Trailblazer | ![]() Huohuo / Hyacine | ![]() Asta / Sparxie |
| DoT Team | ![]() Hysilens | ![]() Kafka | ![]() Black Swan | ![]() Huohuo / Dan Heng • PT |
| Phainon Team | ![]() Phainon | ![]() Bronya / Cerydra | ![]() Trailblazer / Sparkle | ![]() Sunday / Cyrene |
| Castorice Team | ![]() Castorice | ![]() Luocha / Hyacine | ![]() Tribbie / Evernight | ![]() Trailblazer / Cyrene |
Knight 2 Strategy and Best Teams
| Sparxie Team | ![]() Sparxie | ![]() Trailblazer | ![]() Tribbie / Sparkle | ![]() Huohuo / Dan Heng • PT |
| Silver Wolf LV.999 Team | ![]() Silver Wolf LV.999 | ![]() Trailblazer | ![]() Huohuo / Hyacine | ![]() Asta / Sparxie |
| Firefly Team | ![]() Firefly | ![]() The Dahlia | ![]() Fugue | ![]() Trailblazer / Ruan Mei |
| Phainon Team | ![]() Phainon | ![]() Bronya / Cerydra | ![]() Trailblazer / Sparkle | ![]() Sunday / Cyrene |
Knight 3 Strategy and Best Teams
| Evernight Team | ![]() Evernight | ![]() Hyacine | ![]() Tribbie / Trailblazer | ![]() Cyrene / Ruan Mei |
| Archer Team | ![]() Archer | ![]() Sparkle | ![]() Trailblazer / Tribbie | ![]() Dan Heng • PT |
| Ashveil Team | ![]() Ashveil | ![]() Sunday / Sparkle | ![]() Trailblazer / Tribbie | ![]() Dan Heng • PT |
| Castorice Team | ![]() Castorice | ![]() Luocha / Hyacine | ![]() Tribbie / Evernight | ![]() Trailblazer / Cyrene |
King in Check Final Boss Strategy and Best Teams
| Firefly Team | ![]() Firefly | ![]() | ![]() Trailblazer / Fugue | ![]() Ruan Mei / The Dahlia | Devastating Sweep |
| Silver Wolf LV.999 Team | ![]() Silver Wolf LV.999 | ![]() Trailblazer | ![]() Huohuo / Hyacine | ![]() Asta / Sparxie | Beaming With Joy |
| Phainon Team | ![]() Phainon | ![]() Sparkle / Cerydra | ![]() Trailblazer / Dan Heng • PT | ![]() Sunday / Cyrene | Hallowed Abjuration |
| Castorice Team | ![]() Castorice | ![]() Luocha / Hyacine | ![]() Tribbie / Evernight | ![]() Trailblazer / Cyrene | Hallowed Abjuration |
HSR Anomaly Arbitration Rewards
Anomaly Arbitration rewards Lone Stardust, Self-Modeling Resin, Interference Keys, and limited-time avatar frames. Trailblazers who can clear King in Check: Plight will receive all rewards at once, including the rarest avatar frame.
King Stage Star Rewards (Libra's Gift)
| Objectives | Rewards |
| 1 Star | Avatar Frame x1 Lone Stardust x100 Interference Key x1 |
| 2 Star | Avatar Frame x1 Lone Stardust x100 |
| 3 Star | Avatar Frame x1 Lone Stardust x100 |
Knight Stage Star Rewards (Libra's Gift)
| Objectives | Rewards |
| Obtain 3 Stars in Total | Lone Stardust x100 Self-Modeling Resin x1 |
| Obtain 6 Stars in Total | Lone Stardust x100 Self-Modeling Resin x1 |
| Obtain 9 Stars in Total | Lone Stardust x100 Self-Modeling Resin x1 |
Knight Stage Clear Rewards (Mirror's Gift)
| Objectives | Rewards |
| Clear 1 Knight Stage(s) | Lone Stardust x100 |
| Clear 2 Knight Stage(s) | Lone Stardust x100 |
| Clear 3 Knight Stage(s) | Lone Stardust x100 |
More Honkai Star Rail 4.2 Best Teams for Endgame Modes
Anomaly Arbitration is just one piece of the V4.2 endgame. Check out our detailed HSR guides below:
| Honkai Star Rail Guide | |
Currency Wars Best Team Comps | |
Divergent Universe Best Team Comps | |
Conclusion
Anomaly Arbitration tests your roster depth like no other mode. Match your teams to each Knight's traits, manage your cycles efficiently, and save your strongest squad for King in Check to claim all Lone Stardust and exclusive avatar frames.
With Version 4.3's Starward Mode raising the bar across all endgame content, investing in your account now pays off long-term. Check out our Honkai Star Rail tier list to see which characters are worth pulling next.
If you need to secure key units for your best Honkai Star Rail teams, picking up a discounted top-up from GamsGo is a smart way to stretch your pull budget.
Good luck on your runs, Trailblazers. May you secure those full-star clears!
Anomaly Arbitration FAQ
Does Anomaly Arbitration give Stellar Jades?
No. Unlike Memory of Chaos, Pure Fiction, and Apocalyptic Shadow, Anomaly Arbitration does not reward Stellar Jades. Instead, Trailblazers earn Lone Stardust, Self-Modeling Resin, Interference Keys, and limited-time avatar frames.
Can I skip the Knight stages and challenge King in Check directly?
Yes, but it will default to King in Check: Plight, which features Level 120 enemies and a 2-Cycle limit. This is only realistic for heavily invested accounts. Clearing the three Knight stages first significantly reduces the King's difficulty.
Can F2P players clear Anomaly Arbitration?
The Knight stages are manageable at E0 with well-built teams targeting each stage's weaknesses. However, earning max stars on King in Check typically requires higher Eidolon investment. F2P Trailblazers can still claim most rewards through partial clears.
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