Ardelia Guide and Best Build
Ardelia Introduction
Ardelia is a 6-star character in Arknights: Endfield (AKE). Ardelia wields an Arts Unit and belongs to the Supporter class. Ardelia also has access to the Nature element. This guide provides a comprehensive overview of Ardelia's best build, including recommended Weapons, Gear pieces, Stats, and the strongest team compositions and rotations that maximize their potential.
Ardelia Video guide
Ardelia has no video guide yet.
Disclaimer
Ardelia review and guide already include the release balance patch changes to their kit.
Last review update
Patch 1.0
Last major build/calcs update
Patch 1.0
Last profile update*
January 21st, 2026
*Profile update means smaller edits to the guide that don't require new calculations.
To learn more about Ardelia check the sections below. Use the tabs to quickly switch to the kind of information you're looking for - whether it's best build, teams, synergies or calculations.
Profile
Review
Build
Teams & Synergies
Profile
Ardelia Attributes (level 90)
The yellow color shows the Primary Attribute and the green Secondary Attribute. Both of those attributes, on top of their normal bonuses, provide additional ATK to the character.
Ardelia Skills
Rocky Whispers
BASIC ATTACK:
An attack with up to 4 sequences that deals Nature DMG. As the controlled operator, Final Strike also deals 18 Stagger.
DIVE ATTACK:
Basic attack performed in mid-air becomes a dive attack that deals Nature DMG to nearby enemies.
FINISHER:
Basic attack performed near a Staggered enemy becomes a finisher attack that deals massive Nature DMG and recovers some SP.
[Final Strike]: Final Strike is the last sequence of Basic Attack. When the controlled operator's Final Strike hits the enemy, it also deals Stagger and restores some Skill Points (SP).
Dolly Rush
SP Cost: 100
[Corrosion]: An enemy with Corrosion gradually loses resistance against all elements. A non-Nature Infliction + Nature Infliction = Corrosion.
[Physical Susceptibility]: Physical Susceptible targets temporarily take more Physical DMG. The number represents the degree of increase. Effects of the same type can stack.
[Debuff Consumption]: Various Physical and Arts debuffs can be ended early. For example, Crush consumes Vulnerability debuffs, while Combustion consumes Arts Infliction debuffs.
[Arts Susceptibility]: Arts Susceptible targets temporarily take more Arts DMG. The number represents the degree of increase. Effects of the same type can stack.
Eruption Column
Cooldown: 17s
Trigger: When the controlled operator performs a Final Strike on an enemy with no stacks of Vulnerability or Arts Infliction.
[Final Strike]: Final Strike is the last sequence of Basic Attack. When the controlled operator's Final Strike hits the enemy, it also deals Stagger and restores some Skill Points (SP).
[Vulnerability]: Hitting an enemy for the first time with a skill with Physical Status applies Vulnerability instead of the actual Physical Status. A Vulnerability enemy can be Lifted and Knocked Down to add more Vulnerability stacks (up to 4). Hitting a Vulnerability enemy with Crush or Breach will consume the Vulnerability stacks.
[Arts Infliction]: Arts Infliction are special Arts debuffs inflicted upon the enemy. There are 4 elements of Arts Inflictions: Heat Infliction, Electric Infliction, Cryo Infliction and Nature Infliction. Up to 4 stacks of Arts Infliction of the same element can be applied.
[Corrosion]: An enemy with Corrosion gradually loses resistance against all elements. A non-Nature Infliction + Nature Infliction = Corrosion.
Wooly Party
Energy cost: 90
Ardelia Talents
Ardelia talent are being updated for the release version. This will happen as soon as possible!
Factory Pioneer
Inspire
Friendly Presence
When the controlled operator touches a Shadow of Mr. Dolly, Ardelia restores the said operator's HP by [45 + Will×0.38]/[63 + Will×0.53]/[90 + Will×0.75].
If the controlled operator is already at max HP, then restore the HP of the teammate with lowest percentage HP. Shadows of Mr. Dolly lasts for 10s and up to 10 can exist in the battlefield.
Mountainpeak Surfer
[Corrosion]: An enemy with Corrosion gradually loses resistance against all elements. A non-Nature Infliction + Nature Infliction = Corrosion.
Ardelia Potential (dupes)
Dolly Paradise
Potential 1
[Physical Susceptibility]: Physical Susceptible targets temporarily take more Physical DMG. The number represents the degree of increase. Effects of the same type can stack.
[Arts Susceptibility]: Arts Susceptible targets temporarily take more Arts DMG. The number represents the degree of increase. Effects of the same type can stack.
[Debuff Consumption]: Various Physical and Arts debuffs can be ended early. For example, Crush consumes Vulnerability debuffs, while Combustion consumes Arts Infliction debuffs.
[Corrosion]: An enemy with Corrosion gradually loses resistance against all elements. A non-Nature Infliction + Nature Infliction = Corrosion.
Game Rewards
Potential 2
Explosive Eruption
Potential 3
Rock Blossom
Potential 4
Volcanic Steam
Potential 5
Ardelia Lore
"This world has so many mysteries to uncover. We should get to know it better just like ... like how we should learn more about ourselves. Don't you agree, Professor?"
Ardelia is a Rhodes Island operator assigned to Endfield Industries where she serves as an expert geologist under the framework agreement between the two companies.
Ardelia's early work centered on volcanoes, but today her research extends into Ætherside and geological disasters. She spends most of her time in the field, venturing alone into disaster sites to collect samples, analyze structures, and develop theories that have become the cornerstone of Endfield's Blight countermeasures.
Always humble and polite, she carries an inner strength that never seems to run dry. To her, happiness is simple: climbing another mountain, walking another path, hearing the voices of the world, and uncovering the hidden wonders of this planet.
And if you can become good friends with Ardelia, then Mr. Dolly is sure to like you too.
Ardelia Voice Actors
Ardelia Gallery
Review
Ardelia Ratings
Ardelia Pros & Cons
Pros
Applies long-duration Arts and Physical Susceptibility.
Incredibly generic and is able to buff most teams well.
Multiple sources of healing, capable of healing the controlled operator and the team.
Forcibly applies Corrosion, which can be useful to other characters.
Consumes Arts Reactions routinely, which can also be useful to some characters.
She's free!
Mr. Dolly.
Cons
Can become locked out of Combo Skill in teams with lingering Infliction/Vulnerability stacks.
Requires up-front SP investment for her main damage buff.
Ardelia Review
Kit Intro
Ardelia is a 6-star, Nature, Arts Unit support who specializes in applying long-lasting arts and Physical Susceptibility to targets by combining her combo and Battle Skills. This makes her a universal buffer, capable of being useful in almost any team you’re able to consistently activate her combo in. To activate said combo, she requires you land a Final Strike on a target with no Vulnerable or Arts Infliction stacks, which can either be trivial or quite tricky depending on your team. In teams where you consistently burn through your arts/Vulnerability stacks, Ardelia can easily slot in. However, in teams that have lingering stacks, she can end up locked out of her combo for extended periods of the fight, hurting or blocking her ability to do her job.
Assuming you’re playing Ardelia in a team that works for her, she also brings other perks on top of her consistent debuffing. Examples are the ability to spawn healing sheep via her Battle Skill and Ultimate, which when collected, heal the controlled operator or the lowest percentage teammate, helping keep your team alive in tougher battles. Ardelia’s combo also forcibly applies Corrosion without the need to trigger it via an Arts Reaction. Usually, she consumes this herself in order to apply her debuffs with her Battle Skill, but in some teams, just applying it can be important for enabling combos like Laevatain’s.
As long as your team doesn’t completely lock out Ardelia’s combo, and you have a small amount of SP to commit to her Battle Skill every so often, she’ll always be a solid choice for damage Amplification and survival, no matter the team.
Combo
Ardelia’s combo is the foundation of her buffing/debuffing ability, making it one of her most essential abilities. It requires the controlled operator to perform a Final Strike against an enemy with no Arts Infliction or Vulnerability stacks to trigger. This causes Ardelia to attach a bomb to the target enemy that explodes after a short duration, forcibly applying Corrosion to them and surrounding enemies for a short duration. This [Corrode] doesn’t require or consume any other Arts Inflictions when being applied and is primarily used as a resource to empower her Battle Skill. It still works the same as normal Corrode that scales with Arts Intensity if you want to use it for that reason as well.
Tip: One of the main considerations when team building with Ardelia is whether your team is likely to have lingering Inflictions or Vulnerability stacks that aren’t routinely consumed. If so, Ardelia may end up locked out of her Combo Skill for extended periods of time, hurting her viability.
Battle Skill
Ardelia’s Battle Skill is the bread and butter of her damage Amplification. At a base, all it does is cause Ardelia to charge forward toward an enemy, hitting for Nature damage after a short delay. However, if the enemy has [Corrode] when her charge collides, she’ll instead consume the [Corrode] stack and apply a 30-second Arts and Physical Susceptibility to the target, boosting the damage of every major element in the game against them. This is a debuff you’ll definitely want to maintain the majority of the fight on high-priority targets. This debuff is one of the main reasons you consider bringing Ardelia to teams.
Tip: Ardelia’s combo and Battle Skill both have very noticeable delays in connecting to the enemy. Don’t waste time waiting for them to complete; instead, fill the delay with other operators’ abilities.
Talents
Ardelia’s first talent, Friendly Presence, is one of the most important parts of her kit and the source of the majority of her healing capabilities. Unlocking it grants her Battle Skill and Ultimate, the ability to summon “shadows of Mr. Dolly” to the field for 10s. These shadows are collectables in the form of sheep that, when touched by the controlled operator, heal them for a flat amount plus a percentage of Ardelia’s Will stat. Only 10 shadows can exist at once.
Ardelia’s Battle Skill scatters 3 shadows, while her Ultimate scatters a random but, in most cases, higher amount. Also, if the controlled operator is already at max HP, the healing is transferred to the lowest HP operator instead, allowing Ardelia to serve as a full team healer as well. Go sheep hunting if you’re running low on health!
Note: Operators you aren’t controlling cannot collect shadows and will simply pass through them.
Ardelia’s other talent, Mountainpeak Surfer, allows Ardelia to gain a free Battle Skill cast under certain conditions. After consuming [Corrosion] by using her Battle Skill normally, if another enemy nearby still has [Corrosion], Ardelia will retarget them and perform a follow-up Battle Skill in order to consume their Corrosion as well. This effect doesn’t consume SP but can only happen once per Battle Skill.
Ultimate
Ardelia’s Ultimate’s main function is to trigger her talent, Friendly Presence. It costs 90 energy to use, and causes Ardelia to channel an eruption for 3 seconds, which spews out copies of Mr. Dolly into the air, which deal damage and a small amount of Stagger to enemies they land on. Each has a 10% chance to be converted into Shadows of Mr. Dolly by Ardelia’s talent. The main purpose of using this Ultimate is either for keeping the team alive or triggering weapons that activate when using Ultimates. Outside that, the extra Stagger and damage can sometimes be helpful too.
Note: Even if the Dollys from the eruption all luckily land on the same enemy in short succession, enemies can only take damage/Stagger from this ability once every 0.3 seconds, limiting it to 10 hits total.
Gameplay
Ardelia’s gameplay is very simple and revolves entirely around keeping her Susceptibility on your primary target in most cases. To do so:
At the start of fights, start with a Final Strike before applying your Vulnerable/Inflictions to get Ardelia’s combo in rotation.
During the fight, ensure you weave in Final Strikes at moments after you consume Vulnerable/Inflictions to not miss out on the window for activating Ardelia’s combo
After Corrosion is applied, if Ardelia’s Susceptibility hasn’t been applied yet or has a low duration, apply/re-apply it through her Battle Skill.
When Ardelia’s Ultimate is available, use it if you require healing. If you’re using a weapon that triggers off of Ultimate use, time it to take advantage of its bonuses. If neither of those applies, either save it or use it for its damage/Stagger.
Collect Shadows of Mr. Wooly to heal your main operator and or team
Ardelia Skill Priority
Off Field:
Battle Skill > Combo Skill > Ultimate = Basic Attack
Ardelia Dupes Review
Significantly improves the healing from Ardelia’s talent, causing it to treat the lowest HP operator in addition to the controlled operator, but at 50% of the value. When things get tough, ends up being a 1.5 times healing increase.
Increase the channelling duration of Ardelia’s Ultimate by one second from 3 to 4, increasing the number of Dolly’s she summons, while also improving the hit count of the Ultimate. Also increases the total amount of Shadows of Mr. Dolly, the Ultimate summons, on average by 1.2 times, giving you more sheep to collect for healing.
Reduces Ardelia’s Ultimate cost by -15%, taking it from 90 to 77, improving accessibility to sustain in fights while also boosting the potential of Ultimate triggering weapons.
Reduces the cooldown of Ardelia’s combo by 2 seconds, improves its damage (unique multiplier), and also extends its Corrosion duration by 4 seconds, taking it from 7 seconds to 11. The cooldown reduction of this potential is a nice bonus, which makes maintaining Ardelia’s Susceptibility easier, and which also boosts synergy with characters that make use of her Corrosion. The extra duration on Corrosion is very nice in encounters where you don’t find yourself consuming her Corrosion every combo, and leave it active some of the time. However, it won't be as powerful in shorter fights or fights with continually new enemies where you do.
Build
Ardelia Best Weapons
Ardelia best Weapons are placed in order of what fits their playstyle the most. Check the comments to get additional context.
Stat 1 Boost - 9/9
Intellect: +156
Stat 2 Boost - 9/9
Treatment Bonus: +46.40%
Passive Boost - 4/9
Sec. Attribute: +25.60%
Ardelia's signature is definitely her best choice when supporting Arts teams. It has great passive stats for her and after she consumes Corrosion to apply her Susceptibility, she also applies an Arts Damage Taken debuff for a long duration, as well as massively increasing her ability to boost the team's Arts Damage. The one catch with this weapon is that it does nothing for Ardelia when she's supporting Physical teams.
Stat 1 Boost - 9/9
Intellect: +124
Stat 2 Boost - 9/9
Attack: +31.20%
Passive Boost - 9/9
Max HP: +28.00%
When playing Ardelia in Physical teams, Starry Beach cannot be used, so this weapon is the replacement. It has servicable stats for Ardelia, but more importantly, grants all non-Nature Operators a large attack boost for a long duration after she uses her Ultimate. This is still a decent boost to Ardelia's teamwide damage boosting capabilities, but it isn't quite as impactful as her Signature is for Arts teams.
Ardelia Best Gear Set
Ardelia best sets are placed in order of what fits their playstyle the most. Check the comments to get additional context.
Flat HP +1000. When the wearer applies Amp, Protected, Susceptible, or Weakened, other teammates also gain ATK +16% for 15s. This effect cannot stack.
Description
Eternal Xiranite is the go-to 3P set for all supports capable of activating its team-wide buffing effect and who can also benefit from the large amounts of Ultimate Gain each of its pieces provides. Ardelia applies Susceptibility frequently via her battle skill, which can trigger the 3P bonus, granted not as frequently or consistently as some other characters, meaning maximum uptime might need to be helped along by another Operator on this set as well. The INT, WILL and Ultimate Gain heavy pieces are all exactly what she's looking for from her gear.
Pieces
Armor
Gloves
Kit
Kit
Ardelia Best Gear Pieces
Ardelia is a Support, hence there will be no calculations available for them to show the various gear pieces and their percentage difference.
Ardelia Calculations
Ardelia is a Support, hence there will be no calculations available for them.
Teams and Synergies
Ardelia Best Synergies
Ardelia is a universal unit able to be played in almost any team, with the exception of teams that leave lingering Inflictions, which lock out the use of her Combo skill. Because of that, she can synergize with almost any team composition. Here's what she can do:
- She’s able to permanently maintain both Arts and Physical Susceptibility on targets for generic team-wide damage increases that work in any team.
- Outstanding supportive weapon and set options for even more damage amplification, with options that work for both Physical and Arts.
- Forcibly applies Corrosion, which, when optimized around, can lower enemy resistances to all damage temporarily if Susceptibility doesn't need to be refreshed.
- Only requires 100 SP roughly every 30 seconds to function at maximum capacity.
- Strong enough sustain to single handedly keep the team alive through most endgame encounters as long as smart dodging is used.
Increases the Susceptibility applied by Ardelia’s Battle Skill by a notable flat amount, boosting her supportive capabilities nicely. Ends up being a nice upgrade to any team she’s supporting, making it one of her most impactful potentials.