Celestial Differentiator

2-Pc

Increases the wearer's CRIT DMG by 16%. When the wearer's current CRIT DMG reaches 120% or higher, after entering battle, the wearer's CRIT Rate increases by 60% until the end of their first attack.

Where to farm

Simulated Universe · World 5

Divergent Universe · Gentle Words

No character currently fits this set. This is not missing data — the set simply has no owner yet.

Trivia — Verified From Game Data

2-Piece (verified from data-mine)

CRIT DMG +16%

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.

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

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.

	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

Official in-game name, description and story of each piece — tap to expand

Planet Screwllum's Mechanical SunPlanar Sphere

Encapsulated in the plane is the core of Planet Screwllum, imprisoned in a cage composed of countless levers, pistons, and gears. The inhabitants of Planet Screwllum euphemistically refer to it as the "Steel Sun."

Regarding the origin of mechanical life, the carbon-based scholars of the Intelligentsia Guild have a unique speculation: A cluster of electrons born by chance.

Electric currents flow throughout the atmosphere and ground. It separated into secondary forms of different magnitudes under the countless acts of gravity and repulsive forces. According to the scholars' hypothesis, this action is tantamount to cell division in carbon-based life. Thereafter, currents randomly output different potentials via the transistor structure naturally formed on the planetary surface, creating the most primitive program. The proud scholars argued that in this way, machines have "thoughts" that are comparable to carbon-based life.

A mechanic objected to this: How can carbon-based life, which has not even been able to understand the origin of their own beings, have the gall to spout such fallacies? As soon as the words came out, the academic world of the universe was shaken to the core. Mechanical life began to re-examine the arrogant "carbon-based centrism" and examine its own origin.

However, the Screwlites on the Planet Screwllum had no choice but to pause their march — their planet's energy was being exhausted faster than their inspiration circuits. They needed to first find a way for their population to survive.

In the end, they decided to carry out an extreme plan that transcended several Amber Eras: They used the dying planet as fuel to power the Celestial Differentiator. The awe-inspiring, gigantic gear tirelessly processed the punched tape, methodically repeating calculations. With its planetary energy supply, the huge machine simulated a bona fide and stable superecosystem. They would then build their new home around this parent star.

With their planetary crisis lifted, the Screwlites could rest. Always rational, optimistic, and elegant, they are determined to explore the answer to their origins in a purely rational manner.

The massive system is filled with the sound of bearings grinding against each other, and the dense teeth of cogs drive the punched tape to churn out data. One branch flows into multiple branches, and countless branches guide trillions of gears to roar... Then, these branches collapse again and again, falling into the furnace and returning to silence in the bubbling core. Over a long period of time, the programmed super-ecosystem gradually became a wonderful and relatively stable one. Eventually, speculations about the origins of machines began to cause Screwlites' imaginations to wander.

The steel construct that drives the dying star once again activated their intelligent thought circuits. They will continue to ponder and explore their origins until the ever-present mechanical sun completely burns out.

Planet Screwllum's Ring SystemLink Rope

The planetary ring supports all of Planet Screwllum. Just how many are aware that the dense porous rectangular array reflects the truth about the planetary system?

The vast majority of Screwlites were unaware that Planet Screwllum was a great attempt by inorganic life to investigate their origin.

Screwllum felt a little empty. The event of understanding the operation logic of Planet Screwllum did not even cause any exceptional fluctuations in his Intelligent Pulse Waveform.

He stood on the wide terrace of his mansion, looking up at the unstoppable planetary engine. The ring system with dense square holes pierced up from the back of the planet. Everything the planet supports was situated on the strip, revolving quietly with the engine as its axis, day after day. He had seen the despairingly absurd nature of this planetary system: An elegant string of state transient equations, a giant, icy cylinder — that's all Planet Screwllum is, nothing more.

According to his interpretation of the equations, at the birth of the Celestial Differentiator, its lead creator tried to explain the origin of the universe as a cellular automaton and its recursion, and Planet Screwllum itself was a result of the game of life.

Screwlites and other inorganic life on the planet acted as the "cells" in this automaton, while also being smaller-scale cellular automatons. Automatons were always made up of many smaller automatons, going back to the smallest components that form the building blocks of the universe. What was the smallest component? No one knows. Neither Screwllum nor the scholar who first proposed building the Celestial Differentiator do.

That was why Screwllum felt empty.

Did that scholar's attempt fail? But the Celestial Differentiator had worked tirelessly for many Amber Eras. Did that not mean that the origin of the Screwlites, their parent star, and even the entire universe can be attributed to that elegant string of equations? Not really. Until the super-ecosystem collapsed entirely, the equations remained unfalsifiable.

He swirled the fine glass of machine oil, never taking his eyes off the ring that recorded the truth of the planet. The giant screen-like perforated belt was tireless, and the rectangular array filtered the late-night moonlight. Screwllum couldn't stop thinking. Do ends to recursions really exist? He thought. What is the nature of inorganic life — or yet, what is the origin of the universe?

Am I really willing to be only a witness to the ideas of my predecessors?

"No," Screwllum concluded. He decided to seek answers.

FAQ

How many pieces of Celestial Differentiator do I need for the bonus?

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

Which characters should use Celestial Differentiator?

Official sources don't currently confirm any character fit for Celestial Differentiator.

Is Celestial Differentiator a Relic Set or a Planar Ornament?

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

Where do I farm Celestial Differentiator?

Celestial Differentiator farming location: Simulated Universe: World 5.

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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