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.

5★

Broken Keel

Planar Ornaments (2-pc) Tier SS
+10%
Effect RES · 2-Piece Effect
SS
Farm Tier
13
Characters Using It

Once Effect RES hits 30% the whole team gains 10% CRIT DMG, an easily met threshold that makes this set a near-universal team-wide damage buff for almost any comp.

Data last updated: 2026-07-30

Broken Keel is a Planar Ornaments (2-pc) relic set. Best paired with Bronya.

2-Pc

Increases the wearer's Effect RES by 10%. When the wearer's Effect RES is at 30% or higher, all allies' CRIT DMG increases by 10%.

Where to farm
Simulated Universe · World 7
Divergent Universe · Fruit of Evil

Trivia — Verified From Game Data

2-Piece (verified from data-mine)

Effect RES +10%

Characters Who Use This Set

Full-set fit

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 (Gepard, Bronya, Aventurine, Sparkle, Asta, Pela, Tingyun, Trailblazer · Fire, Trailblazer · Fire):

Effect RES > SPD > DEF% > Effect Hit Rate

Relic stats

Main stats — value at max level (5★)

Main stats are not random: at max level you always get exactly this number.

Planar Sphere
  • HP43.2%
  • ATK43.2%
  • DEF54%
  • Physical DMG Boost38.8%
  • Fire DMG Boost38.8%
  • Ice DMG Boost38.8%
  • Lightning DMG Boost38.8%
  • Wind DMG Boost38.8%
  • Quantum DMG Boost38.8%
  • Imaginary DMG Boost38.8%
Link Rope
  • Break Effect64.8%
  • Energy Regeneration Rate19.4%
  • HP43.2%
  • ATK43.2%
  • DEF54%

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.

StatLowMidHigh
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

Getting the main stat on the right slot is the baseline — substats aimed the right direction decide your real power. The table below is a default framework by role, useful for a quick lookup before you know a specific character's kit.
BodyFeetPlanar SphereLink RopeSub-stat priority
Main DPSCRIT Rate or CRIT DMGATK% or SPDthe character's own Elemental DMG BoostATK% (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.
HealerHP% or Outgoing Healing BoostHP%HP%Energy Regeneration Rate or HP%HP% first, then SPD — healing output scales off the target's Max HP.
Tank / ShielderDEF% or Effect Hit RateDEF% or SPDDEF%DEF% or Energy Regeneration RateDEF% first, then Effect Hit Rate, then SPD.
SupportNo safe default — depends on the character's kit, check that character's pageSPD, almost always correctNo safe default — depends on the character's kit, check that character's pageEnergy Regeneration RateSPD 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?

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

Official in-game name, description and story of each piece — tap to expand
Insumousu's Whalefall ShipPlanar Sphere

Encapsulated in the plane is the Insumousu Autonomous Region of Thalassa. The Xianzhou Daiyu had crashed here, inspiring the civilization of Insumousu.

"Once upon a time, the palace of the gods fell from the heavens."

Firstly, there was a shadow beyond the atmosphere, then a fiery glow as it entered the layers of air. At the end, its full form was revealed — It was a grand palace, a heavenly wonder beyond even the combined skill of all of Insumousu's greatest artisans. It descended slowly, as if it had condensed from the heavens themselves. Insumousu's ocean was vast, but could it truly contain this celestial palace fallen from the skies? No one knew for certain.

"Amidst the chaos, some dispersed and fled in all directions. Others remained in the villages on land and under the sea, anticipating the descent of the Divine Fall."

The fallen Xianzhou Daiyu crashed onto the surface of Thalassa, leaving a deep watery crater in the heart of the Insumousu sea. For seven planetary days, the world trembled, while the magnificent ruins stood silently on the sea bed like the tragic and magnificent remains of a god. The survivors of Insumousu, living in their abodes in the sea bed, witnessed how their beloved homes were shattered by the celestial palace from beyond. Yet, with joy and elation, they soon found a new home in the remnants of the Daiyu after the Divine Fall.

As living conditions improved, the people of Insumousu had more time and energy to think. They finally had the opportunity to ask the most important questions as they gazed upon the magnificent ruins that descended from the heavens: Who were "they"? And from whence did "they" come?

In the days of old, the people of Insumousu knew not the art of metallurgy, nor had they yet invented written language. Thus, they turned to imagination to supplement their knowledge, and sought to understand all through the telling of stories. "Legends" were born as stories passed through the generations, turning into "myths" over time. "Myths" then shaped cognition as they themselves endure the flow of time — until "civilization" was born. As centuries passed and stars shifted in the sky, Thalassa became a trade partner of the Xianzhou Alliance. It was then that the aquatic people of Insumousu set foot inside the "celestial palace" for the first time. There, they beheld the complete grandeur of the Xianzhou, and at last learned the truth behind the Divine Fall.

The well-educated Insumousu gentry always regarded themselves as a continuation of the Daiyu. "What the Daiyu once followed, we should follow. What the Daiyu once fought against, we should also fight." When they tell stories from the past, they would still begin with these words:

"Once upon a time, the palace of the gods fell from the heavens."
Insumousu's Frayed HawserLink Rope

The fallen Xianzhou Daiyu is forever anchored in a foreign land. Perhaps it is time to untie its mooring ropes and let it return home.

As the people of Insumousu became enlightened by civilization, they longer see the broken ship's deceased crew as fallen gods. However, their reverence remains unchanged. Insumousu's poets thus sing: "The ocean may swallow mortals, yet their spirits live on forevermore."

In accordance with the calendar of Insumousu, the second day of rest in the Month of Tides is Divine Fall Day — when the water dwellers recite scriptures, consume herbs, and perform bizarre dances along the current in honor of the fallen "gods" who brought a blessing to Insumousu. In modern times, Divine Fall Day gradually lost its original religious meaning — songs replace scriptures, delicacies replace herbs, and only the peculiar dances remain to this day as a cultural heritage.

In the past few hundred Star Calendar years, Insumousu has been generous in sharing its unique culture with the outside world, and the form of Divine Fall Day has quietly undergone more changes.

Insumousu's land cities are usually full of young people, prone to staying up all night singing and dancing during Divine Fall Day. Foreign visitors, especially Xianzhou tourists, often choose to join in the festivities. Foreigners frequently fall in love with the vibrant atmosphere of the cities, these places filled with fiery passion as unstoppable as tsunamis. As the water dwellers grow out of their adolescent years, their lungs would gradually shrink, their necks metamorphose into gills, and their hands, feet, and eyes become more suited for underwater life. The poets always say, "The people of Insumousu give their noisy and boisterous youth to the land, and their quiet and solemn old age to the ocean."

With the support of Xianzhou's Celestial Guild, a new ritual was added to the Divine Fall Day celebration — People would dive into the wreckage of the Xianzhou Daiyu to search for the remains of Xianzhou humans, then inter them into starskiffs and launch the skiffs into the star of the Thalassa system.

Through their discovery of the history of the Daiyu, the people of Insumousu also learned of the tragedy behind its fall. When the Xianzhou Daiyu was irreparably damaged and breaking apart, Qingzhu, leader of the Daiyu, made the courageous decision to sacrifice herself and the entire ship to end the curse of the immortality plague. The Xianzhou Alliance hopes that the fallen heroes will receive a dignified soul-soothing ceremony and the people of Insumousu, who were spared from the disaster, have given their response.

At some point during the night of Divine Fall Day, the revelry would come to an abrupt halt. Adolescents, children, and Xianzhou residents would sit by the shore as adults emerge from the water and solemnly gaze at the oceanic horizon. Then, several starskiffs break through the water and fly from the bottom of the sea toward the star.

The starskiffs are each inscribed with a row of beautiful Insumousu calligraphy that reads, "You should undo the ropes for drowned sailors. Don't cry. You can sail safely after my demise."

FAQ

How many pieces of Broken Keel do I need for the bonus?

Broken Keel is a Planar Ornament — it only has one 2-piece effect (Planar Sphere + Link Rope), see the effect table above.

Which characters should use Broken Keel?

Characters that fit Broken Keel: Bronya, Gepard, Fu Xuan, Aventurine, Sparkle.

Is Broken Keel a Relic Set or a Planar Ornament?

Broken Keel is a Planar Ornament — only 2 pieces (Planar Sphere/Link Rope), the bonus activates by wearing both.

Where do I farm Broken Keel?

Broken Keel farming location: Simulated Universe: World 7.

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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