Arknights Endfield Laevatain Build & Analysis

Laevatain is a 6★ Striker in Arknights Endfield built around sustained Heat pressure, Melting Flame stack management, and one of the strongest “press Ultimate and delete the wave” play patterns available at launch. Her kit is simple to read, but the pacing is strict: most of her real damage lives inside Twilight, and everything outside that window is setup.

If you are comparing Laevatain to other operators or trying to understand where she stands in the broader meta, this article is written to slot directly into our Arknights Endfield Tier List, where all characters are evaluated under the same conditions and assumptions.

Basic Information

Weapon: Sword
Role: Striker
Element: Heat
Rarity: 6★
Main Attribute: Intellect
Secondary Attribute: Strength

Base Stats

Stat	Base	Max
HP	500	5495
ATK	30	318
DEF	0	0
Strength	13	121
Agility	9	99
Intellect	22	177
Will	9	89

Skills

Basic Attack — Flaming Cinders

Up to 5 attack sequences dealing Heat DMG
Final Strike deals 18 Stagger when Laevatain is the controlled operator
Mid-air basic attacks become Dive Attacks, dealing Heat DMG in an area
Attacking a Staggered enemy triggers a Finisher, dealing heavy Heat DMG and restoring SP

Battle Skill — Smouldering Fire

Summons a Magma Fragment to continuously attack enemies and deal Heat DMG
Hitting the enemy grants 1 stack of Melting Flame
If Laevatain has 4 stacks of Melting Flame when casting: consumes all stacks, performs an additional attack dealing Heat DMG, and forcibly triggers temporary Combustion in a large area
When the additional attack hits, restores additional Ultimate Energy
Battle Skill effects are enhanced while Twilight is active
SP Cost: 100

Combo Skill — Seethe

Trigger

When an enemy suffers Combustion or Corrosion

Effect

Fire erupts beneath enemies with Combustion or Corrosion, dealing Heat DMG
If the skill hits, Laevatain gains 1 stack of Melting Flame
Gains Ultimate Energy per enemy hit

Ultimate — Twilight

Laevatain summons Sviga Lævi and becomes the controlled operator
For the duration: basic attacks are enhanced, and Sviga Lævi strikes together with Laevatain, with each attack dealing Heat DMG
Enhanced BATK sequence 3 also applies Heat Infliction
Ultimate Energy Cost: 300

Talents

Scorching Heart

After the controlled operator’s Final Strike or Finisher hits, Laevatain absorbs Heat Infliction from nearby enemies.

Each absorbed stack grants 1 Melting Flame stack (max 4). After reaching 4 stacks, Laevatain’s DMG ignores Heat Resistance for 20s. Also absorbs Heat Infliction from enemies defeated nearby.

Re-Ignition

Promotion II: When HP drops below 40%, gains 90% Protection and restores 5% Max HP per second for 4s (once every 120s)
Promotion III: Duration becomes 8s (once every 120s)

Potentials

Potential I: Smouldering Fire improved — additional attack multiplier 1.2×; scoring a hit returns 20 SP
Potential II: Intellect +20; Basic Attack DMG Dealt +15%
Potential III: Smouldering Fire improved — Combustion duration +50%; Combustion DMG 1.5×
Potential IV: Twilight improved — Ultimate Energy cost −15%
Potential V: Twilight improved — enhanced basic attack multiplier 1.2×; each enemy defeated during Twilight extends duration by +1s (max +7s)

Promotions, Materials, and Bonuses

Promotion Materials

Promotion I

Protodisk ×8
Pink Bolete ×3
T-Creds ×1600

Promotion II

Protodisk ×25
Red Bolete ×5
T-Creds ×6500

Promotion III

Protoset ×24
Ruby Bolete ×5
T-Creds ×18000

Promotion IV

Protoset ×36
D96 Steel Sample 4 ×20
Cosmagaric ×8
T-Creds ×100000

Attribute Bonuses

Promotion I: Intellect +10
Promotion II: Intellect +15
Promotion III: Intellect +15
Promotion IV: Intellect +20

AIC Skills

Promotion I: Manufacturing Cabin operator EXP material production efficiency +20%
Promotion II: Manufacturing Cabin Mood Drop −14%
Promotion III: Manufacturing Cabin operator EXP material production efficiency +30%
Promotion IV: Manufacturing Cabin Mood Drop −18%

Analysis & Verdict

Laevatain is a character with two modes: “Twilight is running” and “Twilight is not running.” The difference is not subtle. During Twilight, her enhanced basics plus Sviga Lævi turn her into a sustained AoE blender that can carry waves by itself. Outside Twilight, she is mostly building the right conditions to earn the next Twilight — Melting Flame stacks, Ultimate Energy, and a usable target to hit while the setup happens.

Smouldering Fire is the key lever. It creates continuous pressure through Magma Fragment hits, and those hits build Melting Flame. Once you hit 4 stacks, the same button turns into a different button: it consumes the stacks, does an additional Heat attack, and forcibly triggers Combustion in a wide area. That extra attack also restores extra Ultimate Energy on hit, so the “4-stack cast” is not just damage — it’s your primary refill tool.

Seethe is the bridge skill. It only triggers on enemies that already have Combustion or Corrosion, and when it lands it gives another Melting Flame stack plus Ultimate Energy per enemy hit. In clean teams, that means supports feed Laevatain the right statuses, she presses Seethe on the marked targets, and the cycle stays smooth. If the team can’t keep Combustion/Corrosion present, Seethe becomes dead weight and the rotation slows down.

The main friction is what happens when fights end at the wrong time. Twilight can overkill a wave, leaving you with Melting Flame stacks and no targets to hit for Ultimate Energy, which means the next pull starts “cold.” That’s not a skill issue — it’s pacing. The character wants enemies to exist long enough to fuel the next window.

Verdict: Laevatain is one of the best AoE clearers at launch because her Ultimate is a complete damage engine. The cost is that you have to respect her cycle. If you keep her fed with stacks and targets, she feels unstoppable. If fights keep ending mid-setup, she feels clunky until the next Twilight finally comes online.

Laevatain Build

Under Construction

Laevatain Teams