RubuskaBuild and Guide
Rubuska is a 6✦ rarity character from the Mineral afflatus who deals Reality damage and belongs to the Survival class.
Rubuska profile was last updated on November 19th, 2025.
To learn more about Rubuska check the sections below. Use the tabs to quickly switch to the kind of information you're looking for.
Profile
Review
Stats & Build
Synergy & Teams
Lore
Profile
Rubuska was released during the 3.1 patch in the CN version of the game. We translated Rubuska skills ourselves, as such, there's a chance of localization errors. We will add the official translations as soon as they will be released. Please contact us directly to report any errors.
1-target buff. Grants [Shadow Feast] to the target for 1 round and recovers (Rubuska's Max HP x10%) HP for all allies.
Shadow Feast:
Pos Status. Clears all allies' [Shadow Cloak] points except that of the target. The target gains 20% of the cleared [Shadow Cloak] points; these additional [Shadow Cloak] points do not count toward the target's maximum [Shadow Cloak] points and they provide 80% of the additional Critical DMG/Ultimate Might. When this status ends, all additional [Shadow Cloak] points disappear.
✦✧✧
[Attack]
1-target attack. Loses (Current HP x10%) HP to deal 120% Reality DMG. This attack is considered 1 [Retribution] attack. Increases all [Shadow Friend]'s [Shadow Cloak] points by (Rubuska's Max HP x3%) points for all allies.
✦✦✧
[Attack]
1-target attack. Loses (Current HP x10%) HP to deal 180% Reality DMG. This attack is considered 1 [Retribution] attack. Increases all [Shadow Friend]'s [Shadow Cloak] points by (Rubuska's Max HP x6%) points for all allies.
✦✦✦
[Attack]
1-target attack. Loses (Current HP x10%) HP to deal 300% Reality DMG. This attack is considered 1 [Retribution] attack. Increases all [Shadow Friend]'s [Shadow Cloak] points by (Rubuska's Max HP x9%) points for all allies.
Retribution:
Special. Deals DMG based on 20% of the user's Max HP instead of ATK.
Shadow Friend:
At the start of the round, loses 10% Current HP. Rubuska converts 70% of this lost HP into [Shadow Cloak] points, up to 15% of Rubuska's Max HP when entering battle. This effect disappears when Rubuska leaves battle.
Shadow Cloak:
Each point of [Shadow Cloak] increases Max HP by 1. Every 200/300 points of [Shadow Cloak] increases Critical DMG/Ultimate Might by 1%.
✦✧✧
[Health]
Mass heal. Recovers (own Missing HP x25% + Rubuska's Max HP x20%) HP for all allies; this effect cannot critically hit. Increases all [Shadow Friend]'s [Shadow Cloak] points by (Rubuska's Max HP x4%) points for all allies.
✦✦✧
[Health]
Mass heal. Recovers (own Missing HP x25% + Rubuska's Max HP x25%) HP for all allies; this effect cannot critically hit. Increases all [Shadow Friend]'s [Shadow Cloak] points by (Rubuska's Max HP x8%) points for all allies.
✦✦✦
[Health]
Mass heal. Recovers (own Missing HP x25% + Rubuska's Max HP x30%) HP for all allies; this effect cannot critically hit. Increases all [Shadow Friend]'s [Shadow Cloak] points by (Rubuska's Max HP x12%) points for all allies.
Shadow Friend:
At the start of the round, loses 10% Current HP. Rubuska converts 70% of this lost HP into [Shadow Cloak] points, up to 15% of Rubuska's Max HP when entering battle. This effect disappears when Rubuska leaves battle.
Shadow Cloak:
Each point of [Shadow Cloak] increases Max HP by 1. Every 200/300 points of [Shadow Cloak] increases Critical DMG/Ultimate Might by 1%.
Cheerful Piper
Insight IPrecognition
Rubuska accumulates [Bloodtithe] whenever an ally loses HP.
Insight I
When entering battle, grants [Shadow Friend] to all allies.
When an ally's [Shadow Cloak] reaches max stacks, Rubuska gains Moxie +1.
Own excess Moxie is temporarily stored. At the end of the round, Rubuska's stored Moxie is used to replenish her own Moxie if able. Rubuska can store up to 3 points of Moxie this way.
Cheerful Piper
Insight IIMax HP +5% when entering battle.
Cheerful Piper
Insight IIIWhen entering battle, grants all allies [Grace of Rubuska I].
After an ally attacks, Rubuska recovers all allies (own Max HP x12%) HP. This healing cannot crit and can be triggered up to 3 times per round).
Special effects
Shadow Friend:
At the start of the round, loses 10% Current HP. Rubuska converts 70% of this lost HP into [Shadow Cloak] points, up to 15% of Rubuska's Max HP when entering battle. This effect disappears when Rubuska leaves battle.
Shadow Cloak:
Each point of [Shadow Cloak] increases Max HP by 1. Every 200/300 points of [Shadow Cloak] increases Critical DMG/Ultimate Might by 1%.
Grace of Rubuska I:
Pos Status. When taking a lethal attack, the carrier is not defeated and recovers (Rubuska's Max HP x30%) HP. Disappears after trigger, unstackable, undispellable.
Rubuska doesn't have an Euphoria update yet. If it will be released, we will add it here.
Rubuska Portray
Portray detailsLv. 1:
Victory Belongs to "Rubuska the First"!: [Shadow Feast]'s duration is increased to 2. The amount of cleared [Shadow Cloak] points transferred to the target is increased to 35%. The proportion of Critical DMG/Ultimate Might gained from [Shadow Feast]'s additional [Shadow Cloak] points is increased to 100%.
Lv. 2:
Cheerful Piper: The maximum amount of [Shadow Cloak] points is increased to 18% of Rubuska's Max HP when entering battle. The proportion of [Shadow Cloak] points gained through [Shadow Friend]'s HP loss effect is increased to 100%.
Lv. 3:
Midnight Prank: At Incantation rank 1/2/3, Reality DMG dealt is increased to 180/270/450%.
Lv. 4:
Happy Piper: After an ally is attacked, the HP recovery for all allies is increased to (own Max HP x16%).
Lv. 5:
Happy Piper: For allies with [Shadow Friend], the amount of [Shadow Cloak] points required for every +1% Critical DMG/Ultimate Might is reduced to 100/200.
Insight 0
Insight 2
Review
Rubuska review isn't available yet. It will be added soon!
Rubuska pros & cons aren't available yet. They will be added when the character is released.
Stats and Build
Build 1 - Rubuska – High HP Bloodtithe
Prioritizes Max HP.
If you don't have Resonance Patterns unlocked, try this build with Placidity:
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Comments
The Wandering Improviser is Rubuska's best-in-slot option and a very good psychube for general Mineral supports, so it's worth building. 12–24% Healing Bonus, 16% Max HP, and an allied buff of 12–24% Ultimate Might is nothing to sneeze at. Unfortunately, this signature psychube is very hard to replace due to a lack of other good 6* healing options that work with her.
Melodies Old and New is a decent alternate option, as its 12–16% Healing Bonus and 8% HP help Rubuska perform her role as a healer. The 3–9% allied DMG Bonus, while not as potent as her BiS, still offer a nice buff to her teammates.
Faded Epitaphs is a more aggressive substitute if you're running Euphoria Eternity as your Bloodtithe DPS instead of Nautika. 8–16% DMG Bonus for all allies works well, and the 8% Max HP is very valuable since Rubuska's entire kit revolves around her HP.
Note: while other characters' Moxie storage effects are considered Force Fields and can therefore activate One with the Flow for extra Moxie, Rubuska's Moxie storage is coded differently and doesn't work this way.
Rubuska stats aren't available yet. They will be added soon!
Synergy & Teams
The teams below come from our Teams database and showcase ANY team with Rubuska present within in all content available in the game.
Lesbian Religious Trauma
Niche 1: HP Loss || Niche 2: FUA
Characters
About the team
Undeniably intensely powerful, the Bloodtithe team is something both safe and risky. Nautika and Semmelweis cause HP levels to bounce frequently, leveled out by Rubuska's healing, revive mechanics and Nautika's [Higge] and defensive buffs. It generates Bloodtithe quickly, allowing for 2 round "Divine Yoik" cycles that deal an absolutely ungodly amount of damage while under Semmelweis' Array and through Sentinel's powerful amping and consistent [Bloodtithe] generation. Flutterpage and Melania(E) can sometimes be used in place for Sentinel whereas Rubuska can be swapped out for Fatutu and Medicine Pocket(E) if needed.
HP Loss - Core
Niche 1: HP Loss || Niche 2: Support Core
Characters
About the team
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If you're looking for more team information, check our Team Database:
Rubuska Synergy information aren't available yet. They will be added soon!
Lore
Rubuska Lore information aren't available yet. They will be added soon!