Guide
How the kit works
Start with The Named Moment. A tap creates the Ring of Searing Radiance, which follows the active character and attacks nearby enemies at intervals. Holding the skill brings out the Flamestrider. It converts Mavuika's Normal, Charged and Plunging Attacks to Pyro damage that cannot be overridden, and sprinting damages enemies in her path. Both forms deal Nightsoul-aligned damage.
The skill restores Mavuika's Nightsoul points to their maximum and puts her in Nightsoul's Blessing. That state consumes points continuously. While it is active, tap the skill to switch forms; the armaments disappear when the state ends.
Use Hour of Burning Skies once you have at least 50% Fighting Spirit. It consumes all available Fighting Spirit, deals AoE Pyro damage with Sunfell Slice and starts Crucible of Death and Life. The amount consumed increases the damage of Sunfell Slice and Flamestrider Normal and Charged Attacks. During this state, Mavuika's actions do not consume Nightsoul points and she has increased interruption resistance. Switching her out cancels it.
The passive Gift of Flaming Flowers gives Mavuika 30% ATK for 10 seconds when a nearby teammate triggers a Nightsoul Burst. After her Burst, "Kiongozi" increases the active character's damage by 0.2% per point of Fighting Spirit consumed, up to 40%. The bonus lasts 20 seconds and decays to zero.
Build and why
For Mavuika on the field, use four pieces of Obsidian Codex. Its two-piece effect gives 15% damage while she is on the field in Nightsoul's Blessing. After she consumes a Nightsoul point on the field, the four-piece effect gives 40% CRIT Rate for 6 seconds. Bear that bonus in mind when choosing artifacts.
For an off-field setup, four pieces of Scroll of the Hero of Cinder City are a team-focused option. When Mavuika triggers a Pyro-related reaction, the set gives nearby teammates a 12% Elemental DMG Bonus for the elements involved. If she is in Nightsoul's Blessing, it gives another 28%; the effect can trigger off-field. Its Energy restoration does not fuel her Burst.
Marechaussee Hunter is another on-field option if the team changes Mavuika's HP: its four-piece effect gains CRIT Rate stacks when her HP rises or falls. Crimson Witch of Flames is an alternative for Pyro damage and reactions. Golden Troupe is worth considering for damage from the off-field ring.
Use ATK Percentage or Elemental Mastery on the sands, Pyro DMG Bonus or ATK Percentage on the goblet, and CRIT DMG or CRIT Rate on the circlet. For substats, look for CRIT DMG, ATK Percentage, Elemental Mastery and CRIT Rate. Elemental Mastery is useful in reaction teams; adjust CRIT Rate around your set's bonus.
A Thousand Blazing Suns is the first weapon choice. Its skill or Burst activation grants CRIT DMG and ATK, and elemental Normal or Charged Attacks can extend that effect. Beacon of the Reed Sea gives ATK after a Skill hit and after taking damage. Verdict is another option: its ATK bonus is always useful, while its Skill damage effect depends on obtaining shards from Crystallize or triggering Lunar-Crystallize.
Leveling priority
For an on-field build, a suggested order is Hour of Burning Skies first, The Named Moment second and Flames Weave Life (NA) last. The Burst provides Sunfell Slice and strengthens Flamestrider attacks, while the Skill supplies both armament forms. If you mainly use the ring off-field, raising the Skill earlier is worth considering.
For ascension, gather Mora, Withering Purpurbloom, Agnidus Agate Sliver, Agnidus Agate Fragment, Agnidus Agate Chunk, Agnidus Agate Gemstone and Gold-Inscribed Secret Source Core. You also need Sentry's Wooden Whistle, Warrior's Metal Whistle and Saurian-Crowned Warrior's Golden Whistle.
Talents use Mora, the same three whistle materials, Teachings of Contention, Guide to Contention, Philosophies of Contention, Eroded Horn and Crown of Insight. Raising all three talents to their maximum takes three Crown of Insight.
Constellations worth it
The Ashen Price is the standout upgrade. In Nightsoul's Blessing it adds 200 Base ATK. The ring reduces nearby enemies' DEF by 20%, while the Flamestrider gains added damage on Normal Attacks, Charged Attacks and Sunfell Slice.
The Night-Lord's Explication is worth considering: it raises maximum Nightsoul points to 120, improves Fighting Spirit gain by 25% and grants 40% ATK for 8 seconds after Mavuika gains Fighting Spirit. "Humanity's Name" Unfettered improves both forms, adding damage to the ring and a damaging ring with a DEF reduction while riding the Flamestrider.
The Burning Sun raises Burst level by 3, and The Meaning of Truth raises Skill level by 3. You can leave those out if you do not need their extra levels. The Leader's Resolve is an option for the team damage bonus: it stops the bonus from decaying and adds 10% DMG Bonus, provided the relevant passive is unlocked.
Common mistakes
Do not build around Energy Recharge expecting it to charge Mavuika's Burst. Watch Fighting Spirit instead, and use teammates' Nightsoul point consumption or Normal Attack hits to fill it.
Do not switch Mavuika out during Crucible of Death and Life if you want to keep its Flamestrider attack bonuses. Switching is fine when you want another character to take the field and use the separate damage bonus from her passive.
Do not assume Obsidian Codex activates just from entering Nightsoul's Blessing: Mavuika must consume a point on the field for its four-piece CRIT Rate effect. Her actions stop consuming points during the Burst state, so check the effect before relying on it. Also remember that the Flamestrider's Pyro conversion cannot be overridden.
