HSR Variable Dice Guide: How It Works, Best Relics to Reroll, and When to Save

Quick Answer: Variable Dice in HSR is best used on a fully enhanced Lv. 15 5-star relic that already has the correct main stat, useful set, and at least 2–3 valuable substats, but rolled most upgrades into the wrong stat. It cannot fix a wrong main stat, wrong set, or fundamentally bad substat base. For most F2P players, the safest targets are rare pieces such as SPD Boots, Energy Regeneration Ropes, Crit Bodies, Break Effect Ropes, and strong Planar Spheres.

Variable Dice is one of the most tempting relic resources in Honkai: Star Rail because it gives a failed Lv. 15 relic another chance. But it is also one of the easiest resources to waste.

If you use it on the wrong piece, you are not “fixing RNG.” You are just gambling again on a relic that may never have been good enough. In my experience, Variable Dice should be treated as an endgame rescue tool, not a normal part of early relic farming.

This HSR Variable Dice guide explains how it works, how to get it, which relics are worth rerolling, which pieces you should skip, and how F2P players should decide whether to use or save it.

Image: Honkai: Star Rail © HoYoverse

🎲 What Is Variable Dice in HSR?

Variable Dice is a 5-star consumable item used on fully enhanced Lv. 15 5-star relics. Its job is to reroll how the relic’s substat enhancement rolls are distributed, giving you another chance at a better final result.

The key point is that Variable Dice is not used to create a good relic from nothing. It is used after a relic already has a strong base but fails during enhancement. If you are still learning which stats matter for each build, start with the HSR relic stats guide before spending rare reroll resources.

Simple explanation: Variable Dice is best for “almost good” relics. It is not good for relics with the wrong main stat, wrong set, or mostly useless substats.

🔁 What Actually Gets Rerolled?

This is the mechanic that matters most. Variable Dice does not reroll the entire relic. It rerolls the enhancement result of a finished relic.

Important mechanic: Variable Dice rerolls the enhancement count distribution of a fully enhanced Lv. 15 5-star relic and can also randomize the final values of those subsidiary stats. It does not change the relic set or main stat, and it should not be treated as a way to rebuild a bad relic from zero.

Mechanic	What Happens	Why It Matters
Enhancement counts are reassigned	The upgrade rolls can move between the relic’s substats.	A relic that rolled into flat DEF may get another chance to roll into Crit, SPD, Break Effect, or another useful stat.
Final substat values can be randomized	The final values after rerolling may differ from the original result.	A reroll is not guaranteed to be mathematically better, even if the distribution looks better.
The original result can be kept	You can compare the original and rerolled result before choosing.	You are not forced to equip a worse result, but the Variable Dice is still consumed.
Existing substat types mostly define the ceiling	The relic still needs good substat lines before rerolling.	Good base relics become strong candidates. Weak base relics remain weak.

My rule: If the relic would still be bad even with better roll distribution, do not use Variable Dice on it.

🚫 What Variable Dice Does Not Change

Relic Problem	Can Variable Dice Fix It?	What You Should Do Instead
Wrong main stat	No	Farm or craft a new relic.
Wrong relic set	No	Farm the correct Cavern or Planar Ornament set.
Only one useful substat	Usually no	Save Variable Dice unless the relic is extremely rare and account-defining.
Bad upgrade distribution	Yes	This is the main reason to use Variable Dice.
One dead substat on a strong relic	Sometimes	Consider using Interference Key together with Variable Dice.

Warning: Variable Dice is not a “make this relic perfect” button. If the base relic is bad, the reroll usually only gives you a different version of a bad relic.

Image: Honkai: Star Rail © HoYoverse

🎁 How to Get Variable Dice in HSR

Variable Dice is rare because it is not a normal farming drop. You should think of it as a premium relic optimization resource, especially if you are F2P or a low spender.

Source	Availability	F2P Friendly?	Notes
Nameless Glory	Paid Battle Pass track	No	One of the most consistent sources, but it requires the paid version of the Battle Pass.
Omni-Synthesizer	Material Synthesis	Technically yes, but costly	Variable Dice can be synthesized using Self-Modeling Resin, which creates a serious opportunity cost.
Events	Version-dependent	Usually yes	Some events may reward Variable Dice, but this changes by patch.
Special shops or exchange systems	Version-dependent	Depends on currency	Check the current in-game shop and official update notes before assuming availability.

F2P warning: If your only way to get Variable Dice is through events or by converting Self-Modeling Resin, do not spend it casually. In many cases, crafting a rare main stat with Self-Modeling Resin may be more valuable than gambling on one failed relic.

This is also why Variable Dice and Self-Modeling Resin should be planned together. If you are not sure which main stats deserve crafting resources, the Self-Modeling Resin guide is the better starting point.

🧪 Variable Dice vs Self-Modeling Resin vs Wishful Resin

Variable Dice is easier to use correctly when you understand where it fits in the relic pipeline. Each relic resource solves a different problem.

Resource	Main Use	When You Use It	Best For	Common Mistake
Self-Modeling Resin	Choose a relic’s main stat during crafting.	Before the relic exists.	Rare main stats such as Energy Regeneration Rope, SPD Boots, Crit Body, or Elemental DMG Sphere.	Using it on easy-to-farm main stats.
Wishful Resin	Helps target desired substats during supported relic crafting.	Before the relic exists.	Creating stronger relic bases for important characters.	Expecting it to guarantee perfect upgrade rolls.
Variable Dice	Rerolls the enhancement result of a finished Lv. 15 relic.	After a relic rolled poorly.	Rescuing a good base piece with bad upgrade RNG.	Using it on relics that were never good enough.
Interference Key	Blocks one unwanted substat from receiving upgrades during a Variable Dice reroll.	During the Variable Dice reroll.	Three-good-substat relics with one obvious dead stat.	Wasting it on low-ceiling pieces.

Resource priority: Use Self-Modeling Resin and Wishful Resin to create better relic bases. Use Variable Dice only when a strong base piece rolls badly.

🏆 Best Relics to Use Variable Dice On

The best Variable Dice targets are not “bad relics.” They are good relics with bad enhancement results.

A strong target usually has:

• Correct main stat for the character.
• Useful relic set or Planar Ornament set.
• At least 2 useful substats, with 3 or 4 being much better.
• Bad rolls into the weakest stat.
• A clear character or team that will use the piece immediately.

For broader farming priorities, use the full HSR relics guide to decide which domains and sets are actually worth your Trailblaze Power.

⭐ Best Main Stats to Consider

Relic Slot	Main Stat	Variable Dice Priority	Best For	Notes
Body	Crit Rate / Crit DMG	High	Traditional Crit DPS and hypercarry builds	Strong target if the piece has Crit, ATK%, SPD, or another useful DPS substat.
Feet	SPD	High	Supports, debuffers, sustain units, speed-tuned DPS	SPD Boots are widely useful and often painful to replace.
Link Rope	Energy Regeneration Rate	Very High	Supports, healers, Harmony, Nihility, sustain units	One of the safest Variable Dice targets if the substats are good.
Link Rope	Break Effect	High	Break DPS, Break support, Super Break teams	Excellent if the character actually scales with Break Effect.
Planar Sphere	Elemental DMG	High	Traditional DPS	Strong target because correct set + correct element + good substats is hard to farm.
Planar Sphere	ATK%	Medium to High	ATK scalers or builds where ATK% is close to Elemental DMG	Do not treat every ATK% Sphere as valuable. The character must actually want it.
Planar Sphere	HP%	Situational High	HP-scaling DPS, HP-scaling sustain units	Only worth rerolling when the unit’s kit scales meaningfully with HP.
Planar Sphere	DEF%	Situational High	DEF-scaling units	Only valuable for characters whose damage, shield, or utility scales with DEF.
Head / Hands	Fixed main stat	Low to Medium	Min-maxed DPS or speed tuning pieces	Use Variable Dice only if the substats are excellent because these slots are easier to replace.

F2P tip: Prioritize rare main stat pieces first. A failed Head relic is usually replaceable. A correct-set ERR Rope with three good substats is not.

📈 Best Substat Profiles

The phrase “2–3 useful substats” can be too vague, so here is the practical version I use when judging Variable Dice targets.

Useful Substats	Variable Dice Priority	Recommendation
1 useful substat	Very Low	Skip almost always.
2 useful substats	Low to Medium	Consider only on rare main stat pieces, strong Planar Spheres, or key character builds.
3 useful substats	High	Strong target, especially if the bad fourth stat can be blocked with Interference Key.
4 useful substats	Very High	Best target if the upgrade rolls were bad.

Build Type	Best Substats Before Reroll	Good Variable Dice Target?	Notes
Crit DPS	Crit Rate, Crit DMG, ATK%, SPD	Excellent	Especially strong if bad rolls went into flat HP, flat DEF, or another dead stat.
Break DPS	Break Effect, SPD, ATK%, useful survivability	Excellent	Very good on Break Effect Rope or SPD Boots.
Support	SPD, Effect RES, HP%, DEF%, needed utility stats	Good	Worth considering if the piece helps speed tuning or survival.
Nihility Debuffer	SPD, Effect Hit Rate, Break Effect, survivability	Good	Best when the character still needs EHR or SPD breakpoints.
Sustain	SPD, HP%, DEF%, Effect RES	Situational	Usually lower priority unless it fixes a real breakpoint or survivability issue.

Image: Honkai: Star Rail © HoYoverse

🔐 When to Use Interference Key

Interference Key is strongest when the relic has three useful substats and one obvious dead stat. In that case, blocking the dead stat can make the Variable Dice reroll much cleaner.

Relic Profile	Use Interference Key?	Why
3 useful substats + 1 dead stat	Yes	This is the best use case because you can block the stat you do not want upgraded.
4 useful substats	Usually no	There may be no obvious bad stat to block.
2 useful substats + 2 dead stats	Usually no	Blocking one bad stat still leaves another bad stat in the pool.
1 useful substat	No	The relic ceiling is too low.

Best Interference Key target: A rare main stat relic with three good substats, one dead substat, and bad original upgrade rolls.

⚠️ Relics You Should Not Reroll

Variable Dice feels most tempting right after a bad enhancement session. That is also when you are most likely to waste it.

Relic Type	Why You Should Avoid It	Better Action
Wrong main stat	Variable Dice cannot change the main stat.	Farm or craft a new piece.
Wrong set with average substats	Even good rolls may not make it worth using long-term.	Farm the correct set.
Only one useful substat	The upside is too low.	Save Variable Dice.
Temporary early-game relic	You will replace it soon.	Save endgame resources.
Head or Hands piece with mediocre substats	These slots are easier to replace than rare main stat pieces.	Keep farming.
Piece for a character you might bench soon	The account value is uncertain.	Wait until your team plans are stable.

Do not use Variable Dice just because a relic is Lv. 15. The question is not “Can I reroll it?” The real question is “Would this relic be valuable if the rolls landed better?”

🧩 Variable Dice Examples: Use, Maybe, or Skip?

Here are practical examples to make the decision easier. These are not tied to one specific character because the best choice always depends on your account, but the logic is the same for most builds.

Example Relic	Current Problem	Use Variable Dice?	Why
Crit DMG Body with Crit Rate, ATK%, SPD, flat DEF	All upgrades went into flat DEF	Yes	Correct main stat and 3 useful substats make it a strong rescue target.
SPD Boots with HP%, DEF%, Effect RES, flat ATK	Rolls missed Effect RES	Maybe	Good for sustain or support if it helps a speed breakpoint, but the ceiling is not as high as a DPS piece.
Elemental DMG Sphere with Crit Rate, Crit DMG, ATK%, flat HP	Most rolls went into flat HP	Yes	Planar Spheres are hard to replace and the base is strong.
Energy Regeneration Rope with SPD, HP%, DEF%, flat ATK	Most upgrades went into flat ATK	Yes	ERR Ropes are rare, and the useful support stats make the piece worth saving.
Break Effect Rope with SPD, Break Effect-related build value, flat DEF, flat HP	Only one or two useful stats depending on the character	Maybe	Consider only if the character is a long-term Break unit and the piece is hard to replace.
Crit Body with flat ATK, flat DEF, HP%, Effect RES	No real DPS substats	No	The relic is weak before rerolling, so Variable Dice cannot fix the low ceiling.
Head piece with Crit Rate and three dead stats	Only one good substat	No	Head pieces are easier to replace and the upside is too low.

Image: Honkai: Star Rail © HoYoverse

📊 How to Score a Variable Dice Target

Before using Variable Dice, score the relic in three layers: base quality, reroll need, and account value. This keeps the decision practical instead of emotional.

Score Area	Question to Ask	Pass Condition
Main Stat	Is this the correct main stat for the character?	Yes, and preferably difficult to replace.
Set Value	Does the relic or Planar set matter for the build?	Correct 4-piece, 2-piece, or Planar Ornament set.
Substat Quality	How many substats are useful?	2 minimum, 3 preferred, 4 ideal.
Upgrade Failure	Did most upgrades go into the wrong stat?	Yes, especially if the good stats were ignored.
Character Priority	Will this piece be used by an active team?	Yes, ideally for Memory of Chaos, Pure Fiction, or Apocalyptic Shadow.
Replacement Difficulty	How painful would it be to farm another one?	High, especially for Planar Spheres, SPD Boots, or ERR Ropes.

If you want a stricter way to judge your pieces, use the HSR relic scorer guide before spending Variable Dice. It is much easier to reroll wisely when you already know whether the relic base is actually valuable.

Good target formula: Correct main stat + useful set + 3 good substats + bad upgrade distribution + active character need = strong Variable Dice candidate.

💎 When Should You Use or Save Variable Dice?

Variable Dice is not an actual gacha pull resource, but the decision logic is similar: use it only when the expected account value is high enough.

Situation	Use or Save?	Reason	Best Action
You have a rare main stat relic with 3–4 useful substats but bad rolls	Use	This is one of the best Variable Dice scenarios.	Reroll, and consider Interference Key if there is one obvious dead stat.
You have a strong Planar Sphere with correct main stat and good DPS substats	Use	Planar Spheres are often difficult to replace.	Use if the piece belongs to an active DPS or long-term carry.
You have SPD Boots or ERR Rope for a key support	Use or Maybe	Support breakpoints can matter more than small DPS upgrades.	Use if it fixes uptime, speed order, or survivability.
The relic has 2 useful substats and a rare main stat	Maybe	The ceiling is lower, but the main stat may justify the gamble.	Only use if the piece is hard to replace and the character needs it now.
The relic has only 1 useful substat	Save	The base is too weak.	Farm or craft a better relic.
You are preparing for a character with uncertain final builds	Save	Pre-farming assumptions can change.	Wait for official kit details and stable build testing.
You are frustrated after bad relic rolls	Save	Emotional rerolls waste rare resources.	Wait, score the relic, then decide later.

Image: Honkai: Star Rail © HoYoverse

🗓️ Should You Save Variable Dice for Future Characters?

Yes, sometimes. If you already pulled a character and are actively building them, using Variable Dice on a strong relic for that character can be worth it immediately.

If the character is only a future possibility, save the dice. Even when a character has been officially announced, final relic priorities can shift once players test rotations, Light Cone options, Speed breakpoints, and team setups.

From a planning perspective, I would only pre-save relic bases for future characters. I would not spend Variable Dice until the character is confirmed for your account and the relic actually fits their final build. For upcoming banner timing, it is safer to check official announcements and then compare them with your own HSR banner history planning rather than rerolling based on speculation.

Safe planning rule: Save promising relic bases for future characters, but spend Variable Dice only after you know the character, build, team, and stat goals.

✅ Step-by-Step Variable Dice Checklist

Before using Variable Dice, go through this checklist. It is simple, but it prevents most bad rerolls.

• Step 1: Confirm the relic is a fully enhanced Lv. 15 5-star relic.
• Step 2: Confirm the main stat is correct for the character.
• Step 3: Confirm the relic set or Planar Ornament set is useful.
• Step 4: Count useful substats. 2 is the minimum, 3 is preferred, 4 is ideal.
• Step 5: Check whether the bad result came from upgrade distribution, not from a bad base.
• Step 6: Confirm the relic belongs to an active team or confirmed future build.
• Step 7: If using Interference Key, block the most harmful dead substat.
• Step 8: Compare the original and rerolled result carefully before choosing.

Personal rule: I do not use Variable Dice unless I can name the exact character, exact relic slot, and exact stat improvement I am trying to get.

❓ FAQ

Is Variable Dice worth using in HSR?

Yes, but only on high-potential relics. The best targets already have the correct main stat, useful set, and at least 2–3 valuable substats. If the relic base is weak, Variable Dice is usually not worth using.

What does Variable Dice reroll?

Variable Dice rerolls the enhancement count distribution of a fully enhanced Lv. 15 5-star relic and can also randomize the final values of those subsidiary stats. It does not reroll the entire relic from scratch.

Does Variable Dice change main stats or substats?

Variable Dice does not change the relic’s main stat or set. It also should not be treated as a way to fix a bad substat base. The relic needs useful substats before you use it.

What relics are best for Variable Dice?

The best targets are rare or hard-to-replace pieces such as SPD Boots, Energy Regeneration Ropes, Crit Bodies, Break Effect Ropes, and strong Planar Spheres with useful substats.

Should F2P players use Variable Dice?

F2P players should use Variable Dice very carefully. The safest approach is to save it for rare main stat relics or pieces that directly improve an active endgame team.

How does Interference Key work with Variable Dice?

Interference Key can be used during a Variable Dice reroll to block one unwanted substat from receiving upgrades. It is best on relics with three useful substats and one obvious dead stat.

📝 Sources & Update Notes

• HoYoverse Version 3.0 Update Notes — Official update source for Version 3.0 relic system changes, including Variable Dice and relic customization updates.
• Honkai: Star Rail Wiki — Variable Dice — Cross-reference for item description, reroll behavior, obtain methods, and change history.
• Game8 — How to Get and Use Variable Dice — Cross-reference for practical usage, Lv. 15 relic requirement, and common obtain sources.