Arclight
Sendgame support
supportsp_generatorelectric_buff
Arclight earns an S tier because her low-cooldown Combo Skill generates a large amount of SP for the team. However, she heavily depends on Electrification to trigger that loop, and her only personal source of Electrification is her Ultimate. Her teamwide Electric DMG buff only activates on every third Electrification consumption, which costs a net 210 SP, so it is best treated as a bonus rather than a core feature.
This endgame build turns Arclight into a dedicated support and SP battery. Thermite Cutter provides a teamwide ATK buff, while the Frontiers gear set adds another stacking team damage buff every time she recovers SP with a skill. Thanks to her 3-second cooldown Combo Skill, this happens frequently. A Redeemer Seal off-piece raises Intellect and Ultimate Gain, making her Wildland Trekker buff stronger and letting her use Exploding Blitz more often to apply Electrification. The build prioritizes Flow, Attack Boost, and Will Boost on the weapon, and Intellect/Ultimate Gain on gear. It performs best in Electric teams that can supply external Electric Infliction; without that, Arclight cannot maintain her SP generation loop.
Insights
Core Mechanics
- SP Engine: Peal of Thunder triggers on Electrification or when Electrification is consumed, restoring SP on a 3-second cooldown.
- Electrification Loop: Tempestuous Arc consumes Electrification for extra Electric damage and SP recovery; after three triggers, Wildland Trekker gives the team Electric DMG scaling with Intellect.
- Ultimate Recycle: Exploding Blitz applies Electric Infliction, then consumes it to force Electrification, allowing Arclight to retrigger her Combo Skill.
- Team Dependency: Arclight needs another source of Electric Infliction to maintain her SP generation, since her only built-in Electrification comes from her Ultimate.
Scaling
- Intellect Scaling: Wildland Trekker's team Electric DMG buff scales with Arclight's Intellect, making Intellect her most valuable stat.
- Potential Growth: Potential 3 increases Wildland Trekker's buff to 1.3x, while Potential 5 reduces the trigger requirement from 3 to 2 Electrification consumptions.
- Early vs Late: In early game, Mordvolt Insulation's flat Intellect is strong; in late game, Frontiers + Thermite Cutter provides more team utility.
- Skill Priority: Level Combo Skill first for SP recovery, then Battle Skill, and leave Basic Attack unleveled because her damage is mostly off-field.
Team Role
Arclight is a Vanguard support whose main role is to generate SP for the squad. She loops her 3-second Combo Skill by triggering Electrification, then uses Tempestuous Arc to consume it for extra SP and damage. Since her only personal Electrification source is her Ultimate, she must be paired with at least one character who can apply Electric Infliction reliably. She works best in Electric-heavy teams where Wildland Trekker's teamwide Electric damage buff can be fully utilized. A strong example is Zhuang Fangyi, who can either use the Electric Infliction from Arclight's Ultimate to trigger her own Combo Skill or use the Electrification to summon more Sunderblades. In combat, use Combo Skill before Battle Skill, then use Ultimate to refresh Electrification and repeat. Position her as an off-field enabler rather than the main damage dealer, and prioritize Intellect and Ultimate Gain to maximize her buffs and Ultimate uptime.
Weapon
Weapon Stat Priority
flowattack_boostwill_boost
Gear
team_buff
Pieces
armor
gloves
core 1
core 2
redeemer seal
Stat Priority
1intellect_boost2ultimate_gain_boost
Explanation
Thermite Cutter is chosen because its teamwide attack buff stacks well with Arclight's support role and is accessible from the New Horizons weapon selector.
The Frontiers set effect triggers whenever Arclight regenerates SP, which happens constantly through her low-cooldown Combo Skill, granting the whole team +16% damage for 15 seconds.
Intellect and Ultimate Gain are prioritized so Wildland Trekker's Electric damage buff scales higher and Exploding Blitz comes up more often for extra Electrification.
If Thermite Cutter is unavailable, OBJ Edge of Lightness still provides Flow and Attack Boost but only buffs Heat and Electric damage. Fortmaker remains a last-resort option.
Notes
- Thermite Cutter grants a teamwide attack buff, making it the best support weapon for Arclight.
- The Frontiers set provides Combo Skill cooldown reduction and a team damage buff whenever Arclight recovers SP with a skill.
- Redeemer Seal is the off-piece, supplying Intellect and Ultimate Gain to boost Wildland Trekker and Ultimate uptime.
- OBJ Edge of Lightness is a decent fallback that increases Heat and Electric damage, while Fortmaker is only a stat stick.