Ember

endgame support

supportsustaindefendertankteam_buffer

Ember is a Heat Defender who keeps her squad alive rather than chasing damage. She stacks Knock Down to apply Vulnerability, which physical-focused teams love, and she converts her own Max HP into party-wide shields while her Combo Skill tops up the active operator's HP. Because her support output is tied to HP and Will instead of ATK, she stays useful without heavy offensive investment.

This is Ember's dedicated endgame sustain setup. Thunderberge supplies additional shields so that between the weapon, her Talent-granted Protection and her Max-HP-scaled Ultimate, she can absorb punishment almost indefinitely. The Eternal Xiranite gear set is the reason the build is more than pure defense: by applying debuffs through her Battle and Combo Skills, Ember triggers a team-wide damage bonus that physical compositions otherwise cannot get, which turns her from a pure defensive pick into a genuine enabler. The remaining pieces (LYNX gloves and two identical Eternal Xiranite Power Cores) exist to push her treatment output and skill uptime. Stack Medicant, HP Boost and Strength Boost in that order — Medicant and HP both inflate the shield her Ultimate hands out, and Strength raises her base HP pool that those shields are calculated from.

Insights

Core Mechanics

Shield generation — Re-ignited Oath slams the ground for Heat damage and hands every teammate a shield scaled off Ember's Max HP, lasting about ten seconds.
Knock Down into Vulnerability — Forward March slams a fan-shaped area to deal Heat damage and Knock Down, enabling Vulnerability for the rest of the team.
Reactive healing — Frontline Support fires automatically when the controlled operator is hit, dealing Physical damage plus Knock Down while restoring that operator's HP based on Will.
Stagger on retaliation — if Ember absorbs damage mid-cast, her Battle Skill slam lands extra Stagger, so eating a hit during the animation is actually rewarded.

Scaling

Strength raises her Max HP, which directly inflates the size of the Ultimate shield — this is the main reason she wants HP-side stats early.
Will is the scaling stat for Frontline Support healing, so it becomes more valuable once you are pushing her sustain role in harder content.
Her defensive kit does not scale off ATK, so offensive stats are largely wasted on her; the second Talent's ATK buff is a low-priority upgrade.
Late game she gains a second layer of value from gear that converts her debuff application into a party damage buff, making her stronger the better her teammates are.

Team Role

Ember occupies the Defender/sustain slot: she is the character you bring when a squad needs to survive rather than race a damage check. Her job is threefold — soak hits, keep the active operator healthy through the automatic Frontline Support trigger, and cover the whole party with Max-HP shields from Re-ignited Oath. On top of that she is a reliable Vulnerability enabler because Forward March applies Knock Down on demand, which physical-damage cores want before their burst windows. She fits best alongside physical carries who already supply their own damage, letting her be the squad's defensive anchor instead of a damage dealer. Because her buffs and shields are team-wide rather than self-only, she scales with the quality of her teammates; in teams that already run the buff-focused gear she adds a redundant layer, so she is most appreciated in compositions that otherwise lack team-wide damage amplification.

Weapon

6★ Claymores

6★ Claymores

5★ Claymores

4★ Claymores

Weapon Stat Priority

medicanthp_booststrength_boost

Gear

team_buff

Pieces

armor

gloves

core 1

core 2

Stat Priority

1medicant2hp_boost3strength_boost

Explanation

Thunderberge is chosen over the alternatives because its shield generation stacks with Ember's existing defensive tools, giving her another layer of survivability every time her Combo Skill fires.

The Eternal Xiranite line is the core of the build: her second Talent marks enemies with a debuff whenever she casts Battle Skill or Combo Skill, and that triggers the set's team-wide damage bonus — something mono-Physical squads normally cannot access.

Former Finery is the recommended fallback for players without Thunderberge, especially since it can come from the New Horizons weapon selector; it trades raw shielding for HP, Will and a small self-heal.

Finishing Call is a decent third option when you want extra HP-treatment effects, and Quencher works if you would rather lean on HP and Will rather than Medicant.

Swap in the alternative weapons whenever you are missing the top pick, but keep the Essence priority aligned with whichever stat the weapon actually scales on.

Notes

Thunderberge is the pick because it layers even more shielding on top of Ember's kit after her Combo Skill resolves, making her the hardest target to break.
The Eternal Xiranite set turns her debuff application into a squad-wide DMG Dealt buff, which is why she is such a natural fit for physical teams that usually skip this set.
LYNX gloves and the two Power Core T1s double down on healing throughput, while the armor's Arts Intensity raises the damage from her Knock Down procs.
Essence order matters: Medicant first, then HP Boost, then Strength Boost — everything funnels into bigger shields and better heals.