Last updated: 30/07/2026
The figures on this page come directly from gamevika's internal game data store (counted/read straight from the real records), not an estimate or copy from elsewhere.
Pioneer Diver of Dead Waters
The 4-piece scales CRIT Rate and CRIT DMG with the number of debuffs on the target and doubles that bonus for a turn right after inflicting a debuff, while the 2-piece adds flat DMG vs debuffed enemies, making this a best-in-slot pick for crit-focused debuff/DoT DPS.
Data last updated: 2026-07-30
Pioneer Diver of Dead Waters is a Cavern Relics (4-pc) relic set. Best paired with Welt.
Increases DMG dealt to enemies with debuffs by 12%.
Increases CRIT Rate by 4%. The wearer deals 8%/12% increased CRIT DMG to enemies with at least 2/3 debuffs. After the wearer inflicts a debuff on enemy targets, the aforementioned effects increase by 100%, lasting for 1 turn(s).
Trivia — Verified From Game Data
4-Piece (verified from data-mine)
CRIT Rate +4%
Characters Who Use This Set
2-piece or 4-piece?
Based on current data, 2 pieces are enough — no character is recorded as needing the full 4-piece bonus of this set, so you can mix it with another set on the remaining slots.
Priority substats
Derived from the recommended substats of characters currently using this set (Welt, Acheron, Dr. Ratio, Moze, Cipher):
CRIT Rate/DMG > Effect Hit Rate > SPD > ATK%
Relic stats
Main stats are not random: at max level you always get exactly this number.
- HP705
- ATK352
- HP43.2%
- ATK43.2%
- DEF54%
- CRIT Rate32.4%
- CRIT DMG64.8%
- Outgoing Healing Boost34.5%
- Effect Hit Rate43.2%
- HP43.2%
- ATK43.2%
- DEF54%
- SPD25
Sub-stats — value of one roll (5★)
Every +3 levels grants one roll, landing randomly on one of the three values below. These are the true values added to your stats; the in-game panel shows them rounded down.
| Stat | Low | Mid | High |
|---|---|---|---|
| HP | 33.9 | 38.1 | 42.3 |
| ATK | 16.9 | 19.1 | 21.2 |
| DEF | 16.9 | 19.1 | 21.2 |
| HP | 3.5% | 3.9% | 4.3% |
| ATK | 3.5% | 3.9% | 4.3% |
| DEF | 4.3% | 4.9% | 5.4% |
| SPD | 2 | 2.3 | 2.6 |
| CRIT Rate | 2.6% | 2.9% | 3.2% |
| CRIT DMG | 5.2% | 5.8% | 6.5% |
| Effect Hit Rate | 3.5% | 3.9% | 4.3% |
| Effect RES | 3.5% | 3.9% | 4.3% |
| Break Effect | 5.2% | 5.8% | 6.5% |
What main stat to run, by role
| Body | Feet | Planar Sphere | Link Rope | Sub-stat priority | |
|---|---|---|---|---|---|
| Main DPS | CRIT Rate or CRIT DMG | ATK% or SPD | the character's own Elemental DMG Boost | ATK% (or Break Effect for a break-focused kit) | CRIT comes first — aim for roughly a 1:2 ratio of CRIT Rate to CRIT DMG — then ATK%, then SPD. |
| Healer | HP% or Outgoing Healing Boost | HP% | HP% | Energy Regeneration Rate or HP% | HP% first, then SPD — healing output scales off the target's Max HP. |
| Tank / Shielder | DEF% or Effect Hit Rate | DEF% or SPD | DEF% | DEF% or Energy Regeneration Rate | DEF% first, then Effect Hit Rate, then SPD. |
| Support | No safe default — depends on the character's kit, check that character's page | SPD, almost always correct | No safe default — depends on the character's kit, check that character's page | Energy Regeneration Rate | SPD first; add Effect Hit Rate if the character applies debuffs. |
This is a default framework, not a hard rule. Some characters break from it because of their own kit — for example a support that needs CRIT DMG or Break Effect instead of Energy Regeneration Rate. Always check that character's page before locking in a set.
Basic rules you need before picking Relics
- Head always rolls flat HP, Hands always roll flat ATK — no need to check the main stat on these two, just look at the substats.
- Only Feet can roll SPD as a main stat; only the Link Rope can roll Energy Regeneration Rate as a main stat.
- A substat never duplicates that piece's own main stat, and the four substats never duplicate each other.
- Each piece caps at 4 substats. Every +3 upgrade grants one roll — either unlocking a new substat line or boosting an existing one at random.
- Enhancement cap by rarity: 2-star +6, 3-star +9, 4-star +12, 5-star +15. Starting substat count: 3-star 1–2 lines, 4-star 2–3 lines, 5-star 3–4 lines.
- The main stat is NOT random — at the level cap it's always the exact same fixed number. Only substats roll randomly.
- Quick filter trick: enhance to +9 and you already see enough substat quality to decide keep-or-salvage — don't burn all your resources to +15 before judging.
Should you keep or salvage this piece?
- Wrong main stat for the slot (e.g. an HP% Sphere on a Lightning DPS) → salvage it right away, don't get attached.
- Right main stat but the 4 substats don't have even one line of CRIT Rate / CRIT DMG / SPD (for a DPS role) → low value, salvage first.
- Right main stat plus at least 2 substats you actually need from the start → enhance to +9 and reassess — this piece is worth investing in.
Where can you get Relics?
- Cavern of Corrosion — the main source of the 4 Cavern Relic pieces, with 6 difficulty tiers tied to your account's Equilibrium Level; the higher your Equilibrium Level, the thicker the 5-star drop rate.
- Simulated Universe — source of the 2 Planar Ornament pieces, only unlocked from World 3 onward.
- Divergent Universe — a second source for Planar Ornaments, separate from the Simulated Universe.
- Operation Briefing — clearing these objectives also pays out Relics and related materials.
- In-game shops — some vendors sell full 4-piece sets directly for in-game currency.
- Treasure chests scattered across the main story maps.
- Story quest rewards, plus milestone rewards for leveling up your Trailblaze Level.
Relics unlock during the Belobog story arc. To target the exact set and slot you need instead of farming blind, use the Omni-Synthesizer: it runs on Relic Remains, which you get by salvaging Relics you don't use. The machine unlocks from Equilibrium Level 3 onward.
Every piece & its lore
Pioneer's Heatproof ShellHead
Pioneer's Heatproof ShellA heavy diving helmet in a style common in Orkron. Through the small porthole, one can only see the unbearable and endless expanse of darkness.
"Look! The air in Orkron smells like raspberries." Scarlet snowflakes fall on the soft, cloud-like sugar threads and quickly disappear. The little Nameless from Toyro laughs and then bends over, holding her stomach. She laughs at her own choice of words — how can one see a scent with one's eyes? After a moment of shared laughter, the silence cuts like a sharpened blade, and the air seems to frost over in an instant.
"Frebass, are you still going to the depths of IX?" The question comes from her companion who is always carrying a long blade. She is a good companion, but no one knows where she comes from.
The little Nameless hides inside her bulky diving suit. A long pause later, she hands the companion a slightly burnt marshmallow, her eyes narrowed like the silhouette of a fully opened sail:
"Of course — because I will walk on a road deeper and further than Akivili's!"
Pioneer's Lacuna CompassHands
Pioneer's Lacuna CompassA compass in the form of a wristwatch. The magnetic needle has been removed and can no longer point in any direction.
Whispering as it pecked at her bones, in one rise and fall of time,
She experienced the stages of old age and youth,
And entered the vortex."
The girl has heard a story like this. In the story, the world people inhabit is depicted as a towering tree, composed of ownerless energy. "This kind of energy is invisible, intangible, incomprehensible, and meaningless," she thought, "just like how IX has no meaning."
The little Nameless is somewhat melancholic, worrying about how she would orient herself after stepping into the depths of "Nihility." But soon, she had an inspiration — on her fourteenth birthday, her mother left her with one last gift... a small compass.
"If that's the case, as long as the compass senses not the magnetic field but 'energy,' wouldn't that solve the problem?"
The little Nameless removed the magnetic needle from the compass, but when the girl descended into the darkness, she realized that the compass' only direction was down.
Pioneer's Sealed Lead ApronBody
Pioneer's Sealed Lead ApronA heavy diving suit crafted from scrap iron, airtight and impenetrable. Even its wearer often jests that it resembles more of a deep-sea coffin.
She forgot the cries of seagulls, the roar of the abyss,
The gains, and the losses."
The little Nameless gazed at the planetary ring wider than the boulevards of Toyro. She decided to launch herself into the singularity in the black hole.
"Even Akivili didn't manage to go there." The girl could always hear the distant sound of waves echoing in her heart. "I will walk on a road deeper and further than Akivili's." She prepared herself thoroughly — unidentified rusty metal plates, used oxygen tanks, discarded gyroscopic posture control devices, a self-circulating life support system, and a rectifying hood... She soldered all the materials together, ensuring that the entire suit was airtight. She believed it would protect her from the harm of Nihility.
She picked up the diving helmet her father left behind and wore a self-made "Medallion of Honor." Before leaving, she and her companion once again went to the cedarwood forest, toasting marshmallows one last time.
Later, when Frebass' spacecraft approached the edge of the black hole, this was all she could recall about Orkron.
Pioneer's Starfaring AnchorFeet
Pioneer's Starfaring AnchorThe heavy boots are formed like the anchor of a ship. Its owner is prepared to never return to the surface.
Think of Frebass,
And how she was once as beautiful and stood as tall as you."
The lead boots, like iron anchors, drag the girl down further and further. They are dutifully carrying out the task bestowed upon them from the beginning of their conception.
The girl never closes her eyes, fighting boldly against the cold and lonely darkness. She remembers the first time she heard stories about Akivili. She remembers the first day she set upon the journey and the "Medallion of Honor" she forged for herself. She remembers the 30 days she spent journeying with her companion. She remembers the forest glade they gathered in for the first and last time, and how the air there tasted like raspberries. She remembers whistles, guitars, and the flute, and the songs they sang together. She remembers scarlet snow falling on slightly burnt marshmallows and disappearing.
The vast void looms near the end of the vivid memories, yet she suddenly sees a dash of crimson blinking briefly into existence in the center of the pitch-black world.
Therefore, the little Nameless remembers the smile she gave from the bottom of her heart when the girl with the sword took the marshmallows for the final time.
"I never thought I would meet anyone similar to me. You've walked so much further on this road than me.
Therefore, you will surely walk with me till then end, right?"
"Of course. Our end has already been determined... However, just like you said —
Even though I may turn into a shallow puddle of dead water in the end, there is still a lot I can do on my journey toward that moment. Therefore, no matter what, I have to go try it—
— Because I will walk on a road deeper and further than Akivili's!"
FAQ
How many pieces of Pioneer Diver of Dead Waters do I need for the bonus?
Pioneer Diver of Dead Waters has separate 2-piece and 4-piece effects — see the effect table above to compare.
Which characters should use Pioneer Diver of Dead Waters?
Characters that fit Pioneer Diver of Dead Waters: Welt, Jiaoqiu, Aventurine, Dr. Ratio, Acheron.
Is Pioneer Diver of Dead Waters a Relic Set or a Planar Ornament?
Pioneer Diver of Dead Waters is a Relic Set (cavern) — 4 pieces (Head/Hands/Body/Feet), with separate 2-piece and 4-piece bonuses.
Where do I farm Pioneer Diver of Dead Waters?
Pioneer Diver of Dead Waters farming location: Cavern of Corrosion: Path of Dreamdive.
How to read this relic set page
Cavern Relics have 4 pieces: Head and Hand always carry fixed flat stats (HP and ATK), so only Body and Feet have a random main-stat you actually choose. The 2-piece effect unlocks with 2 out of 4 pieces from the same set; the 4-piece effect is stronger but needs all 4 and usually has its own trigger condition — read the exact text above before committing. Planar Ornaments only have 2 pieces (Planar Sphere + Link Rope) and only ever have one 2-piece effect, there is no 4-piece version.
The two types also differ in where you get them: Cavern Relics drop from the Cavern of Corrosion and cost Trailblaze Power per run; Planar Ornaments come from the Simulated Universe or Divergent Universe, which do NOT cost Trailblaze Power — you trade for them with items or completion rewards instead. A full loadout usually combines one 4-piece Cavern set (or two different Cavern sets at 2 pieces each) with one 2-piece Planar set — go 4-piece when that set gives a large, reliable damage buff, and mix 2+2 when you need to stack several smaller stats (e.g. ATK% from one set plus Elemental DMG% from another).
The "who should use this" list is pulled from cross-sourced build consensus and updates automatically as the meta shifts, it is not hand-picked. See the full set table on the Relics page, or check terms in the HSR Glossary.
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