Ardelia Best Build Guide: Skill, Gear, Weapons and Teams | Arknights: Endfield

If you’re jumping into Arknights: Endfield as a new player, Ardelia is the kind of early freebie that actually changes your account’s comfort level. She’s a 6★ Supporter (Nature, Arts Unit) who plays “team babysitter” while still bringing real fight value through debuffs and smart sustain.

Better yet, she’s obtainable from the Awakening Sign-In beginner rewards (log in over your first two weeks), so most players can build around her from day one instead of praying for a healer drop.

This guide breaks down her best upgrades, weapons, gear sets, Potentials, and team-fit rules so you spend materials where they matter.

Ardelia Overview

Rarity: 6-star | Class: Supporter | Weapon: Arts Unit | Element: Nature

As a support, Ardelia isn’t locked into any specific team right now. She’s more of a “plug-and-play” operator you can slot into most comps as a healer plus a debuff-oriented support, thanks to her sustain and Arts-related weakening tools.

That said, she can be a bit picky about teammates’ Battle Skill properties: allies who constantly apply abnormal states can interfere with the conditions she wants, and adjusting an entire team’s damage rhythm just to accommodate one operator can feel awkward and overly complicated. So while Ardelia can fit into many teams, there isn’t a single lineup that needs her, and she doesn’t have a must-play partner either.

Overall, as a 6★ Support, Ardelia sits comfortably above average: she’s broadly useful, packed with practical utility for many matchups, and brings strong “problem-solver” value—so she’s an easy pull recommendation for most players.

 

Ardelia Skills & Leveling Priority

Basic Attack — 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.

Low priority. A 4-hit chain with a Staggering Final Strike plus dive/finisher utility, but Ardelia usually isn’t your main on-fielder. The close-range, commit-heavy sequences can get you punished.

Suggested Level: Rank 6      Best Level: Rank 9

 

Battle Skill — Dolly Rush

Hops on Mr. Dolly and rams the target to deal Nature DMG. If the target has Corrosion, then consume the Corrosion and apply Physical Susceptibility and Arts Susceptibility to the target.

Top priority. This is her whole job: ram a target, then cash out Corrosion into both Physical and Arts Susceptibility—your main team DPS boost. It also feeds her healing-shadow engine.

Suggested Level: Rank 9      Best Level: Rank 12

 

Combo Skill — Eruption Column

Launches a homing Volcanic Cloud at a target enemy that deals Nature DMG when close enough to the target. The Volcanic Cloud explodes after a short delay, dealing half of the Nature DMG and forcibly applying temporary Corrosion to nearby enemies.

Trigger: When the controlled operator performs a Final Strike on an enemy with no stacks of Vulnerable or Arts Infliction.

Lowest priority. It’s a convenient Corrosion enabler via a delayed explosion, but the trigger is picky: your controlled Final Strike must hit an enemy with no Vulnerable or Arts Infliction stacks, so teammates can “turn it off.”

Suggested Level: Rank 6      Best Level: Rank 9

 

Ultimate — Wooly Party

Ardelia enters a mobile channeling state and summons the aid of Mr. Dolly. Multiple copies of Mr. Dolly are thrown in random directions. Each copy deals Nature DMG. Each enemy can only take 1 damaging hit every 0.3s.

High priority after Battle Skill. A mobile channel that throws Dolly copies in random directions for AoE pressure; with talent procs, it can also sprinkle extra healing shadows. Strong for waves, less consistent single-target.

Suggested Level: Rank 9      Best Level: Rank 12

Therefore, the recommended skill leveling order for Ardelia is:

Battle Skill > Ultimate > Basic Attack > Combo Skill

Push them to the recommended level first, then finish the rest as resources allow.

 

Talents

Upon reaching Promotion II , Ardelia’s Combat Talents open up in a meaningful way. Friendly Presence is available early and progresses through three tiers, with the later tiers gated behind higher promotions. Mountainpeak Surfer, however, is unlocked at E2 and comes fully enabled as a single-tier talent.

For E2 progression, prioritize unlocking Mountainpeak Surfer first, then circle back to finish Friendly Presence to its top tier.

 

Ardelia Best Weapon

Best in Slot

Dreams of the Starry Beach	Rarity: 6✦ Type: Arts Unit Base ATK: 486
	After the wielder consumes Corrosion, target enemy suffers Arts DMG Taken +16% for 25s. Effects of the same name cannot stack.
As a login reward weapon, Dreams of the Starry Beach is arguably Ardelia’s best fit. It gives a chunky boost to her core stat Intellect, and the Healing Efficiency increase noticeably helps her lift the whole team’s HP bar, improving overall survivability. Most importantly, when she consumes Corrosion, it grants a long Arts damage-taken window for teammates to comfortably cash out.

Alternative

Chivalric Virtues	Rarity: 6✦ Type: Arts Unit Base ATK: 486
	Treatment Efficiency +16%. After the wielder gives HP Treatment with their own skill, the entire team gains ATK +14.4% for 15s. Effects of the same name cannot stack.
A solid support fallback: Treatment Efficiency directly boosts Ardelia’s healing from her own skill, and the teamwide ATK buff is easy to keep active because she triggers HP Treatment frequently.
Freedom to Proselytize	Rarity: 5✦ Type: Arts Unit Base ATK: 426
	When the wielder restores HP with their own battle skill, the controlled operator is restored for another [168 + Will x 1.4] Effect only triggers once every 15s.
A comfy budget pick when your carry keeps taking chip damage: it turns Ardelia’s regular healing loop into extra “padding” for the on-fielder, stabilizing HP between enemy bursts and letting you stay aggressive.

 

Ardelia Best Gear Set

Armor	Gloves	Kit	Kit
Eternal Xiranite Armor	Eternal Xiranite Gloves T1	LYNX Slab	Eternal Xiranite Power Core T1

Eternal Xiranite fits Ardelia because she frequently converts Corrosion into Susceptibility, so she can reliably trigger the set’s teamwide ATK buff while also gaining the flat HP cushion. It’s the more offense-leaning option for boosting team damage windows.

Armor	Gloves	Kit	Kit
LYNX Heavy Armor	LYNX Gloves	LYNX Slab	Eternal Xiranite Power Core T1

LYNX is Ardelia’s “keep everyone alive” set: it buffs Treatment Bonus and adds damage reduction to allies she treats, which matches her play pattern of dropping frequent healing. Pick this when your team is getting chipped down or you need stable clears over faster times.

 

Ardelia Potential Recommendation

Tier 1 — P0 is already fully playable

If you just want her “core job,” stop at P0. Her Battle Skill already consumes Corrosion to apply both Physical + Arts Susceptibility, and her kit naturally generates Shadows of Mr. Dolly for consistent sustain. You’re getting the full support loop without needing dupes.

Tier 2 — P2 (Sweet Spot)

P2 is the best value dupe because it upgrades Friendly Presence so that when your on-fielder picks up a Dolly Shadow, Ardelia also heals another ally (lowest HP%) for half the value. That turns her sustain from “good for the driver” into whole-team stabilization, which matters a lot in real fights.

Tier 3 — P5 (Biggest power spike alongside P2)

If you’re committing hard, P5 is the other major breakpoint: it upgrades Eruption Column with shorter cooldown, higher damage, and longer Corrosion duration. In practice, that means more reliable Corrosion setup and more frequent windows for Ardelia to cash out her Battle Skill’s Susceptibility, tightening rotations and boosting team DPS uptime

 

Best Team Comps

Before you slot Ardelia into a team, build around how she sets up and cashes out:

• Give her a “clean opener” if you rely on her Combo: Eruption Column only triggers when your controlled operator lands a Final Strike on an enemy with no stacks of Vulnerable or Arts Infliction, so teammates who instantly apply those debuffs can accidentally block her self-Corrosion setup.
• Bring a carry who can capitalize on her debuff window: her Dolly Rush consumes Corrosion to apply both Physical + Arts Susceptibility, so any stable DPS (Physical or Arts) that can burst on command benefits a lot.
• Prefer an on-fielder with safe repositioning: her sustain is mostly pickup-based—Dolly Rush creates Shadows of Mr. Dolly, and healing happens when the controlled operator touches them—so teams that can dash through pickups without breaking rotations feel best.

Heat End-Game Team

Laevatain

Wulfgard

Antal

Ardelia

Early-Game Electric Team

Endministrator

Perlica

Arclight

Ardelia

Early-Game Physical Team

Endministrator

Chen Qianyu

Pogranichnik

Ardelia

Yvonne Cyro Team

Yvonne

Xaihi

Akekuri

Ardelia

 

Conclusion

Ardelia won’t force a single “must-play” lineup, but that’s exactly why she’s so valuable: she’s a flexible healer + debuff support you can slot into most comps, as long as you respect her timing quirks and let your DPS cash out her debuff windows.

And if you’re a few pulls short of that comfort upgrade, topping up Arknights: Endfield through LDShop can be the simplest way to finish your plan without stalling your progression.