TL;DR
- Poet of Mourning Collapse rewards slow characters with up to 32% CRIT Rate and 10% Quantum DMG
- Farm from Cavern of Corrosion: Path of Aria after main story progression
- Tribbie, Clara, and Yunli excel with this set due to their low base speed stats
- Strategic speed management is crucial – avoid SPD substats to maintain bonus eligibility
- Counter-attack specialists gain maximum value from the CRIT Rate enhancements
The Poet of Mourning Collapse relic set introduces a unique strategic paradigm in Honkai Star Rail by transforming what would typically be a disadvantage – low speed – into a significant combat advantage. This specialized equipment set deliberately slows down your characters to unlock substantial critical hit potential, creating build opportunities that defy conventional stat optimization approaches.
What makes this relic particularly valuable is its dual-threshold system that provides different CRIT Rate bonuses based on specific speed breakpoints. This mechanic encourages players to carefully manage their character’s speed stats rather than simply maximizing them, adding depth to team composition decisions. The set’s design specifically benefits characters who function effectively without taking frequent turns, particularly those with powerful counter-attack mechanics or follow-up abilities.

Understanding the speed manipulation mechanics is crucial for maximizing this relic’s potential. The 8% SPD reduction actually works in your favor by helping characters stay below the critical thresholds, while the Quantum DMG bonus ensures consistent damage output regardless of turn frequency.
| Name | Poet of Mourning Collapse |
|---|---|
| 2-piece Set Bonus | Increases Quantum DMG by 10% |
| 4-piece Set Bonus | Decreases the wearer’s SPD by 8%. Before entering battle, if the wearer’s SPD is less than 110/95, increases the wearer’s CRIT Rate by 20%/32%. This effect also applies to the wearer’s memosprite. |
| Location | Cavern of Corrosion: Path of Aria |
The 4-piece bonus operates on a tiered threshold system that rewards extreme speed management. At the first tier, characters with SPD below 110 receive a respectable 20% CRIT Rate boost, while those who push the optimization further by staying under 95 SPD gain an exceptional 32% CRIT Rate enhancement. This creates a clear progression path for players to optimize their builds.
Advanced players should note that the memosprite application means this relic synergizes exceptionally well with characters whose combat effectiveness extends beyond their own turns. The SPD reduction isn’t merely a trade-off – it actively helps characters maintain their eligibility for the higher CRIT Rate tiers by preventing accidental speed inflation from substats or buffs.
The Poet of Mourning Collapse set is exclusively available from the Cavern of Corrosion: Path of Aria, strategically positioned adjacent to the Chisel Zone anchor point within Bloodbathed Battlefront Castrum Kremnos of Amphoreus. This location becomes accessible only after completing specific main story progression requirements, typically around the mid-point of the Amphoreus narrative arc.
Efficient farming requires understanding the domain’s mechanics and optimal team compositions. For consistent clears, bring a well-balanced team with strong AoE capabilities and sustain, as the enemies in this Cavern can present significant challenges for unprepared players. Plan for 15-20 minute farming sessions to maximize your Trailblaze Power efficiency.

Common farming mistakes include using speed-buffing supports that might interfere with testing the relic set bonuses, or attempting to farm before having adequate team levels. Ensure your main DPS is at least level 70 with properly leveled traces before attempting efficient farming runs.
Tribbie stands as the premier candidate for the Poet of Mourning Collapse relic set due to her naturally low speed stat and exceptional synergy with both the Quantum DMG and CRIT Rate components. Her kit inherently benefits from landing critical hits, and the relic’s memosprite application extends this benefit to her additional combat mechanics. When building Tribbie with this set, focus entirely on CRIT DMG, ATK%, and Quantum DMG bonus substats, completely avoiding any speed enhancements.
Clara represents another exceptional user, holding the distinction of the game’s lowest base speed at just 90. This positions her perfectly to capitalize on the maximum 32% CRIT Rate bonus without any additional optimization required. Her counter-attack focused playstyle means she benefits tremendously from the increased critical hit probability on every retaliation.

Yunli requires more careful stat management with her base speed of 94 – just one point below the higher threshold. This means you must meticulously avoid any SPD substats or external speed buffs that might push her over this critical breakpoint. The similarity to Clara’s kit means she can achieve comparable results with proper build attention.
For advanced optimization, consider pairing these characters with supports that provide damage amplification without speed interference. Harmony characters that offer CRIT DMG buffs, ATK boosts, or vulnerability application work exceptionally well while maintaining the speed thresholds necessary for maximum relic effectiveness.
Action Checklist
- Verify main story progression to unlock Cavern of Corrosion: Path of Aria
- Farm relic set with optimized team composition (15-20 minute sessions)
- Check character base speed and ensure no SPD substats
- Prioritize CRIT DMG, ATK%, and Quantum DMG substats
- Test relic set functionality in simulated universe or calibration
No reproduction without permission:Tsp Game Club » HSR Poet of Mourning Collapse Relic: Location, Bonus & Best Characters Master the strategic Poet of Mourning Collapse relic set with optimized builds, farming strategies, and character-specific setups
