Ardelia

endgame support

support sustain debuff healer

Ardelia is a versatile Nature-element sustain character providing healing and powerful debuffs. She applies Corrosion to reduce enemy resistance, then triggers Physical and Arts Susceptibility to amplify team damage. Her healing scales with Will and is activated by collecting Shadows of Mr. Dolly, spawned by her Battle Skill and Ultimate. This dual role makes her valuable, though healing requires active pickup mechanics and Corrosion management.

This build focuses exclusively on maximizing Ardelia's healing potential. With the LYNX gear set and a weapon that boosts Treatment Efficiency, she can keep the entire team alive even in high‑damage encounters. The DMG Reduction buff further protects allies after receiving heals. While it sacrifices some of the team damage amplification of the Eternal Xiranite build, it excels in content where survival is the main challenge. Use Chivalric Virtues if you still want to contribute some ATK buffs while healing.

Insights

Core Mechanics

Combo Skill Eruption Column applies Corrosion to enemies, reducing their elemental resistance. The Battle Skill Dolly Rush consumes Corrosion to apply Physical and Arts Susceptibility, increasing damage taken by enemies.
Talent Friendly Presence spawns Shadows of Mr. Dolly when Dolly Rush hits or during Ultimate, which heal the controlled operator (and lowest-HP teammate) when touched. Healing scales with Will.
Talent Mountainpeak Surfer allows Dolly Rush to be cast again for free if an enemy with Corrosion is nearby, effectively doubling its debuff and healing output.
Ultimate Wooly Party summons multiple sheep that deal area Nature damage and have a chance to create Shadows of Mr. Dolly for additional healing.

Scaling

Healing scales with Will, making will_boost and treatment_efficiency stats high priority. Intellect provides minor damage scaling but is not a primary focus.
Debuffs like Corrosion and Susceptibility have fixed percentages and durations; they do not scale with stats, so Ardelia's effectiveness as a debuffer is gear‑independent.
Team damage amplification from weapons and gear (e.g., Dreams of the Starry Beach, Eternal Xiranite set) scales with gear quality, making late‑game investment significant.
Early game she is already a capable healer with Freedom to Proselytize and Mordvolt Resistant set; her utility grows with better weapons and gear.

Team Role

Ardelia operates as a dedicated sustain unit with a strong debuffing niche. She fits into most team compositions that need healing and want to bypass enemy resistances. Her Corrosion reduces all elemental resistances, setting up follow‑up damage from any element. She synergizes well with characters who trigger her Combo Skill via Final Strikes, and with teams that lack other sources of Physical/Arts Susceptibility. The Eternal Xiranite gear set turns her debuff application into a team‑wide DMG buff, cementing her as a high‑value support in endgame content. In short, she is a plug‑and‑play healer/debuffer that enhances overall team damage while keeping allies alive.

Weapon

dreams_of_the_starry_beach Best

6★ Wand

chivalric_virtues Rank 2

6★ Wand

freedom_to_proselytize Rank 3

5★ Wand

fluorescent_roc Rank 4

4★ Wand

Weapon Stat Priority

infliction treatment_efficiency_boost intellect_boost

Gear

team_survivability

Pieces

armor

gloves

core 1

core 2

Stat Priority

1 treatment_efficiency 2 will_boost 3 hp_boost

Explanation

Dreams of the Starry Beach remains the best weapon because it provides both healing improvement and an Arts DMG taken debuff, giving the healer build some offensive utility.

Chivalric Virtues offers a team‑wide ATK buff after healing, useful when healing is already sufficient but you want more damage.

Freedom to Proselytize adds a secondary heal when using the battle skill, making it a strong low‑rarity option for pure healing.

The LYNX set is chosen over Eternal Xiranite when survivability is the top priority; the DMG Reduction can prevent one‑shots and ease pressure on the team.

Notes

The LYNX set grants +20% Treatment Efficiency and applies DMG Reduction to healed allies, greatly improving team survivability.
Healing output scales heavily with Will, so will_boost and treatment_efficiency are the highest priorities.
The LYNX set effect does not trigger on non‑controlled allies or from shared healing effects like in the Survive the Gas stage.