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Endfield Character

Si Build Guide

Featured

By okMuzzy

Updated on Oct 7, 2026

Oct 7, 2026

Operator Profile

This page will be updated once version "Sanctuary of Ink" goes live!

Si breaks the rules and changes how you approach combat, rotations and even team building. She can adapt her inflictions to the element of the first operator of your team, and can also support them with many buffs, including a Combo Skill cooldown reduction effect. Si can benefit from these effects, as long as she's in the first slot of your team.

Her Inksoul mechanic creates a stationary enemy that redirects all damage, inflictions and special statuses to the linked enemy, removing the need of chasing enemies in the arena.

6 Star

Supporter

Greatsword

Cryo

IntellectMain Attribute

TBDSub Attribute

Build Overview

Weapon

Best-in-SlotEmpty

F2PEmpty

Gear Set

Set EffectType 50 Yinglung

Gear

ArmorEmpty

GlovesEmpty

Kit 1Empty

Kit 2Empty

The new version will add new gear options for Type 50 Yinglung, Eternal Xiranite and Pulser Labs (plus some non-set Gears). Out of these options, it's likely that Si will use Type 50 Yinglung, as her Combo Skill can deal good damage, but that's assuming she will get new gear that fits her main/secondary attribute!

Eternal Xiranite is another viable option, but you're giving up on a lot of damage potential for a bit of team damage. It's also very likely that someone else is already using Eternal Xiranite, and since it cannot stack, it's pointless to use it on Si.
Pulser Labs is not recommended since it requires Si to apply solidification on enemies, which might interfere with her Combo Skill triggers and team rotation.
Qingbo can provide faster combos, but since her Combo is primarily used for damage, it's much better to focus on damage stats rather than CDR and Arts Intensity.

Skill Overview

The following is a brief overview based on the "Sanctuary of Ink" Special Program!

Basic Attack: Sequence of up to 5 attacks that deals Cryo DMG to enemies.
Battle Skill - Brushwork Realm (100 SP): Deals DMG, one infliction of the same element as the operator in the first slot of the team, and applies Artful Intent to the target. After casting the skill, temporarily changes Si's Battle Skill to Initial Stroke.
Battle Skill - Initial Stroke (~10 SP): Pulls an Inksoul from a target with Artful Intent. After casting the skill, temporarily changes Si's Battle skill to Final Stroke.
Battle Skill - Final Stroke (0 SP): Forces the Inksoul to disappear early. The Inksoul will move to the host and trigger an explosion.
Combo Skill: Triggers when an enemy's Cryo or Heat Infliction is consumed or absorbed. Deals massive damage to enemies in a area. The damage increases based on the number of Infliction stacks consumed or absorbed.
Ultimate: Deals damage in a large area, grants Cryo and Heat Amp to the entire team, and shortens the Combo Skill cooldown for the operator in the first position of the team.

Artful Intent: Records a portion of the damage taken by the target, and upon expiring, deals Fixed damage equal to the damage recorded over a large area.

Inksoul: A stationary target that echoes all the damage and effects received to the original host. If the original host is defeated before the Inksoul expires, the Inksoul will link to another enemy and apply Artful Intent to it.

Best Teams

Si - Tangtang - Arcane - Xaihi

A team that uses 3 sub-DPS to buff each other. The entire team can apply Cryo Inflictions on the enemy and Arcane can trigger Corrosion with her Battle Skill, activating Si's Combo Skill for massive damage.

Laevatain - Si - Camille - Wulfgard

A Laevatain team that uses Si for Heat Amp, AoE damage and Inksoul for a easier combat. Laevatain can also trigger Si's Combo Skill (and Camille too), adding a bit more damage to your rotations.

Yvonne - Tangtang - Si - Xaihi

Similar to Laevatain, Yvonne can make good use from Inksoul for a safer and easier combat. It also ensures your Yvonne will deal as much damage as possible, since she doesn't need to chase enemies during her Ultimate.

Best Weapons and Gear

Weapons

Jade Vessel - Si's Signature Weapon
Long Heritage - Battle Pass Alternative

As an Intellect Operator, it's very unlikely that Khravengger can perform well enough, making her only viable choices her signature weapon and the Battle Pass alternative.

Gear

General Use

Gear Set: Type 50 Yinglung

We still don't have the details regarding the new gears added in the new version, but it's likely that Si will use Type 50 Yinglung. The combo effect synergizes well with her gameplay and increases the value of her main damage source.

Release Date

Si will release on October 15th, 2026 along with the release of the Sanctuary of Ink version (1.6).

Banner: October 15th, 2026 until November 5th, 2026

From there, she will be removed from the off-banner pool after 2 additional banners, making her total run time end in approximately early January, 2027.