Fina Guide: Skill, Best Weapon & Teams - Duet Night Abyss

Fina arrives in Duet Night Abyss as a powerful Lumino Support character who can significantly boost your team's damage output. Today LDshop breaks down her kit, best build, and ideal teams to help you master this versatile buffer.

Lumino│Support│Ranged Weapon: Assault Rifle│Melee Weapon: Sword

 

Skill Kit Breakdown

➤Ultimate Skill: Let the Tea Party Begin!

·Creates a Boisterous Tea Party field that continuously consumes Sanity.

·Cycles Elements: Tapping the skill again switches the field effect in this order: Nightingale (Hydro) → Hound (Pyro) → Unicorn (Electro) → Butterfly (Anemo).

·Key Buff: When the field appears or its element shifts, Fina and allies gain a bonus to Elemental DMG matching the field's type.

·This is her most important skill, providing universal elemental coverage for your team.

➤DMG Skill: On a Warm Afternoon

·Deals Lumino DMG and slows enemies in front of her.

·Synergy: While her Ultimate is active, using this skill repositions the tea party field to her location, expands its range, and increases this skill's damage.

·Useful, but not as important as her other abilities.

➤Passive Skills:

·Bad Sorcerers Hate Sunlight!: Generates Taleweaver Quill stacks (max 30, 45 at I2). Each stack increases damage dealt by Fina and her allies. Stacks are generated by using her Normal Skill and over time while her Ultimate is active.

·To Be Continued: Using her DMG Skill further increases team damage based on her current Taleweaver Quill stacks.

·Advance, Poker Card Soldiers!: [Available only when deployed as a Combat Partner]. Increases Weapon DMG for self and allies proficient in Swords or Assault Rifles.

·Weapon DMG Boost: Fina increases Weapon DMG for herself and all allies proficient in Swords or Assault Rifles.

Intron Levels

➤I1 (★★★★): Allies receiving her elemental damage buff also gain PEN stats (likely resistance shred), making them deal significantly more damage.

➤I2 (★★★★★): Increases Taleweaver Quill cap to 45, allowing for much higher team damage buffs.

➤I4 (★★★★): Each Taleweaver Quill stack increases Fina's Skill DMG and Skill Range, enhancing her personal damage and utility.

➤I6 (★★★★★): During her Ultimate, Fina's weapon attacks gain massive CRIT Chance and automatically target enemy weaknesses. This unlocks her potential as a main DPS.

Fina's goal is to keep her Boisterous Tea Party active as long as possible.

 

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Fina Build Theory: Stat Priority

To maximize Fina's potential as a support, prioritizing the right stats is crucial. Here is the optimized stat focus based on a deep understanding of her kit:

➤Stat Priority:

·Skill Efficiency (Core): This is Fina's most important stat. It directly reduces the Sanity cost of her Boisterous Tea Party, dramatically increasing its uptime and ensuring your team has near-permanent access to her powerful buffs.

·Skill Duration (Important): Further extends the duration of her ultimate and other buffs, working seamlessly with Skill Efficiency for maximum coverage.

·Skill DMG (Important): Directly boosts the damage from her Taleweaver Quill stacks and the Boisterous Tea Party field, enhancing her personal damage contribution and the damage bonus provided by her passive.

·Max Sanity (Important): A larger Sanity pool allows her to maintain her ultimate for longer periods before needing to recover.

·Skill Range (Lower Priority): This stat can be safely de-prioritized.

The reasoning behind this priority is key: the core value of Fina's ultimate—the bonus Elemental DMG for the entire team—is a global buff. This means it applies to all allies instantly, regardless of their position on the battlefield. The Skill Range stat only affects the radius of the field's damage-over-time effect on enemies, not the reach of her essential team-wide buff.

Therefore, by minimizing investment in Skill Range, you can efficiently concentrate your resources on Skill Efficiency, Duration, and DMG, making her supportive capabilities stronger and more consistent. This approach is similar to building other buffer supports like Truffle and Filbert.

➤Demon Wedge Loadout

Core
Feathered Serpent’s Rescue
Slot 1	Slot 3	Slot 4	Slot 2
Helios’s Prismatic Neon	Siren’s Wings Inspo	Typhon’s Prime Serenity	Griffin’s Skylume Midnight sun
Slot 5	Slot 7	Slot 8	Slot 6
Covenanter’s Blaze Eternity	Covenanter’s Blaze	Covenanter’s Blaze Eternity	Covenanter’s Blaze Eternity
EternityTolerance:111/100

 

Best Weapons & Alternative

➤Signature Ranged: Dreamweaver's Feather

Weapon	Max ATK	Crit DMG
Dreamweaver's Feather	188.28	240%

Boosts Skill Range and has a chance to grant allies a massive ATK% buff (up to 90% at max stacks). It is tailor-made for her.

➤Alternative Ranged: Arclight Apocalypse or Osteobreaker for their Skill Duration bonuses.

Weapon	Max ATK	Crit DMG
Arclight Apocalypse	225.94	220%

This weapon provides a solid boost to Skill Duration. Its core mechanic is that landing critical hits randomly grants allies a valuable buff—such as increased ATK, DEF, Skill Damage, or further Skill Duration.

Weapon	Max ATK	Crit DMG
Osteobreaker	213.39	225%

This weapon provides a significant Skill Duration boost, making it excellent for buffers and summoners whose effects linger on the field, though it is less impactful for characters who do not rely on sustained skills. It also features good range and fire rate.

➤Best Melee: Remanent Reminiscence

Weapon	Max ATK	Crit DMG
Remanent Reminiscence	213.39	210%

Its skill to restore Sanity on CRIT hits is perfect for mitigating Fina's high Sanity consumption. Its extended attack range enables engaging multiple enemies simultaneously, combining sustained skill usage with enhanced battlefield control.

➤Alternative Melee: Siren's Kiss and Fathomless Sharkgaze.

Weapon	Max ATK	Crit DMG
Siren's Kiss	263.6	220%

This weapon boosts Skill Range and stacks ATK Speed with Normal Attacks. Its polearm charged attack enables simultaneous melee damage and skill casting, providing unique combat versatility.

Weapon	Max ATK	Crit DMG
Fathomless Sharkgaze	251.04	235%

This weapon provides a substantial 72.0% Skill Range boost, enhancing the AoE coverage for skill-dependent characters. When paired with the In Full Bloom Demon Wedge, it adds tactical mobility through a slide attack that functions as an effective dash.

 

Best Teams for Fina: Top Weapon DMG Team

Fina excels in teams built around Weapon Damage.

DPS	Support	Support	Geniemon
Lynn	Fina	Phoxhunter	Pyrelf
			Zippyro
			Pyrootail

This premier team composition maximizes Weapon DMG by synergizing Fina's buffs with a top-tier carry. Lynn serves as the primary on-field DPS, unleashing massive damage with her Consonance Weapon while fully benefiting from Fina's elemental and weapon damage buffs. Fina provides the core offensive support through her Boisterous Tea Party, and Phoxhunter further amplifies the team's damage while providing essential survival with Ultra Shields. For optimal performance, activate Fina's Ultimate to establish the Tea Party, then switch to Lynn to deal damage, using Phoxhunter for supplementary buffs and shielding. The recommended Geniemon is Pyrelf, with Zippyro or Pyrootail as solid alternatives.

 

Conclusion

Fina establishes herself as an exceptionally versatile and potent support, capable of elevating any Weapon DMG-focused team with her universal elemental buffs and substantial damage amplification. By prioritizing Skill Efficiency and Duration to maintain near-constant uptime on her Boisterous Tea Party, she becomes an indispensable asset for end-game content. We'd love to hear about your own team compositions and experiences with Fina—share your thoughts and builds in the comment section below!

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