Rarity: 5 stars
Rarity: 5 stars
Regular Attack
Arts Damage

Quercus is an Abjurer Supporter with a focus on healing and recovering SP for her allies. She also fulfills a minor damage mitigation role with her talent. Quercus’ talent, unlike that of other Abjurers, provides the Shelter effect above a certain HP threshold. Due to this it’s much easier to make use of the effect, especially as she has a kit focused on healing. Uniquely, she also has a more universal utility than others, which is her SP restoration on each heal with S2.

Trait:Deals Arts damage; When skill is active, attacks instead restore the HP of allies (heal amount is equal to 75% of ATK)

Operator Stats

Attack Power
Attack Speed
1.6 sec
Arts Resistance
Redeploy Time
70 sec
DP Cost
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  • Easy to use SP battery with S2 with a good skill cycle
  • Provides constant healing with S1, having a considerably faster attack interval than medics


  • S1 often isn’t worth using over proper medics, as it takes time to charge
  • Damage output is not worth caring about, while healing output falls short against proper medics


Forest Sanctuary

Apply 14% Sanctuary effect to allies within range with more than 70% HP

Quercus has a more easily applicable Shelter effect than other Abjurers. It applies above the threshold, rather than below, which means it’ll actually help with reducing damage of very heavy hits that would burst down your operators. With her kit focusing on consistent healing, it makes it fairly easy to keep up, but unlike others within the branch, this effect is rather weak and isn’t her focus.


Earth's Benevolence

Per Second RecoveryManual Trigger
Initial SP
SP Cost

ATK +40%
Unlimited duration, can manually deactivate skill

This skill is a simple healing option that allows Quercus to become a pseudo-medic after a short charging time. It’s not worth picking over actual medics, but it can serve as additional healing to help allies stay above the HP threshold so her talent can take effect. One of its main uses will be to have a backup healing option when you may be restricted and unable to use medics. The skill can be deactivated, but her damage is extremely lackluster, so there’s almost no reason to ever do so.

Skill Mastery

Recommended Rank

This skill isn’t recommended for mastery. Its gains are not noteworthy at all, and the skill simply doesn’t find enough use to be worth considering.

Recommended Skill

Echo of Life

Per Second RecoveryManual Trigger
Initial SP
SP Cost
17 sec

ASPD +60, restores 1 SP to the ally being healed

S2 is Quercus’ stand-out skill, as it gives her a unique ability to generate SP for her allies with each heal. Unlike other SP batteries which provide small amounts of SP consistently, this skill is a short burst which can generate a large amount of SP. It is meant to provide fast but weak heals, this is to avoid overhealing which would disallow her from granting SP. It shouldn't be expected to be a good healing option, and mostly considered just for the utility.It’s best used with operators who take damage consistently, whether that be from enemies or their own skills.

Skill Mastery

Recommended Rank

This skill can prove to be quite useful, but functions well and doesn’t improve much with masteries. Such a level of investment for only going from 14 to 17 maximum generated SP and a slightly faster charge time isn’t worthwhile at all. However, if you do plan on mastering this skill, do note that M1 is the least valuable of all mastery levels. It doesn’t increase the number of attacks Quercus performs, making it not worthwhile in the slightest if you don’t plan on mastering the skill fully.



Self-Damaging Operators

Quercus works well with a good number of offensive operators who have HP loss-related downsides. These primarily include operators such as Fiammetta, Horn, Specter the Unchained, Gavial the Invincible, Aak, and Shalem :

  • Fiammetta has her constant HP loss and an instant use skill with very low cost, meaning that a single cast of Quercus S2 can help fuel multiple skill uses. She also has an infinite duration skill that can be charged much faster with the use of Quercus.
  • Horn has two skills that can cause considerable HP loss, alongside Horn’s high HP pool Quercus is able to provide a considerable amount of SP to her. The only real issue being the SP lockout period on Horn’s S3, which limits Quercus’ utility to healing Horn only after her S3 ends.
  • Specter the Unchained with her S3 will want to be below the enemies’ current HP for higher damage output. She will damage herself if she has too much HP when attacking them. Quercus can be used after Specter’s skill ends to charge it back up.
  • Gavial the Invincible will suffer constant HP loss after her S3 ends. It lasts 20 seconds, allowing Quercus to heal her for the entirety of her S2 with ease.
  • Aak suffers constant HP loss due to his trait. While he’s more commonly used as a helidrop buffer, Quercus can boost his SP gain greatly to make his skills very spammable.
  • Shalem suffers constant HP loss during his S2. While it could easily be lethal, Quercus’ S2 can be saved until a later portion of the skill. This way she can prevent Shalem from dying while also recovering some SP for him. This can be especially useful as he depends on defensive recovery to use his skill.

These are the operators she can work more easily out of the pocket with, but any other operator can be a potential beneficiary. If they are on a poison mist map, or placed upon an originium tile, then Quercus can be turned into an easy pocket SP battery for them as you wish.

Swordmaster Guards

This branch of guards can easily benefit from Quercus’ SP charging ability, as all of their skills are charged offensively, and they are a melee class who will often be exposed to enemy damage. For some of these operators the downtimes on their more impactful skills can be quite long, as they may not always have enemies in range to attack, so having an additional source of SP is quite noticeable. The branch also doesn’t have many long duration skills, meaning that SP lockout is less of a worry and Quercus can be used more freely as an SP battery.



Warfarin’s S2 is able to apply a DOT effect to a unit within her range alongside an ATK buff. Quercus can take advantage of the DOT by repeatedly healing the target operator. This synergy works best with operators with instant-cast or very short duration skills, such as Swordmaster guards. Warfarin herself is another SP battery, allowing the two to work together to provide very high amounts of SP to their targets.

Regen Operators

Certain operators that have HP loss can have it be completely nullified by certain operators that provide regen. Someone such as Fiammetta loses enough HP where it is usually not a worry, but others, such as Gavial the Invincible can have her HP loss be nullified with enough regen from someone like Skadi the Corrupting Heart. This would mean they wouldn’t lose any health at all to allow Quercus’ SP from healing to come into effect.

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Last updatedAugust 16, 2022