Illuga is a 4-star Geo Polearm wielder who functions as a specialized Lunar-Crystallize support and Geo damage amplifier. His kit revolves around the Nightingale's Song stack mechanic, where he buffs nearby party members' Geo damage based on his Elemental Mastery. This Illuga build guide covers his complete build optimization, including talent priorities, recommended weapons and artifacts, the best team compositions, and constellation value analysis.
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Illuga Character Profile
Illuga Information
| Character Information | ||
|---|---|---|
Illuga | Rarity | ★ ★ ★ ★ |
| Element | ||
| Weapon | ||
| Progression Bonus | Elemental Mastery +96 | |
| Combat Role | Support / Lunar-Crystallize Buffer | |
Illuga Kit Explanation
| Ability | Description |
|---|---|
| Normal Attack: Oath Taking Spear Technique | Performs up to 4 consecutive spear strikes. Charged Attack consumes stamina to lunge forward, dealing damage to opponents along the way. Plunging Attack strikes the ground from mid-air, dealing AoE DMG. |
| Elemental Skill: Dawnbearing Songbird | Summons the trusty messenger bird "Aedon" that dashes toward enemies, dealing Geo DMG. Tap for quick forward dash; Hold to enter aiming mode and command Gale to target specific opponents. Provides energy generation for Burst uptime. |
| Elemental Burst: Shadowless Reflection | Lights the lamp, dealing AoE Geo DMG and gaining Haunted Night's Oriole-Song effect for 20 seconds. Illuga obtains 21 stacks of Nightingale's Song. When nearby active party members deal Geo DMG, 1 stack is consumed to increase damage based on Illuga's Elemental Mastery. Lunar-Crystallize reactions increase damage further. Geo Constructs grant +5 additional stacks (max +15 stacks). |
| A1 Passive: Moonsign Benediction | Increases the party's Moonsign level by 1, making it easier to reach Ascendant Gleam for enhanced abilities. Provides exploration utility with +10% movement speed at night (18:00-06:00). |
| A2 Passive: Torchforger's Covenant | After unleashing Elemental Skill or Burst, nearby party members gain Lightkeeper's Oath for 20 seconds: Geo DMG dealt to opponents and CRIT Rate increase by 5%, CRIT DMG increases by 10%. With Moonsign: Ascendant Gleam, characters affected by Lightkeeper's Oath gain +50 Elemental Mastery. |
| A4 Passive: Demonhunter's Dusk | Nightingale's Song effects are enhanced: When there are 1/2/3 Hydro or Geo characters in the party, Nightingale's Song increases DMG by 7%/14%/24% of Illuga's Elemental Mastery. For Lunar-Crystallize reactions, the increase is 48%/96%/160% of Elemental Mastery. |
Strengths and Weaknesses
| Strengths |
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| Weaknesses |
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Illuga Talent Priority
Illuga's talent priority focuses on maximizing his support capabilities through his Elemental Burst, which provides the majority of his team buffs.
| Talent | Recomended Level | Priority Notes |
|---|---|---|
| Elemental Burst | 9+ | Highest Priority - Core ability that enables Nightingale's Song stacks and team-wide damage amplification. All damage buffs scale with this talent level. |
| Elemental Skill | 1+ | Medium Priority - Primarily used for energy generation. Leveling provides modest personal damage increase but isn't essential for support role. |
| Normal Attack | 1+ | Lowest Priority - Illuga rarely stays on-field. Minimal contribution to his support function. Only level if resources are abundant. |
Leveling Recommendation: Max Elemental Burst first → Level Elemental Skill to 6-8 for energy generation → Leave Normal Attack at level 1 unless building as hybrid.
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Illuga Best Weapons
Illuga's best weapon depends on team energy needs and stat priorities. For Elemental Mastery support builds, weapons that provide EM or Energy Recharge offer the highest value.
4-Star Weapons | ||
|---|---|---|
| Option 1 | Favonius Lance (4★) |
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| Option 2 | Kitain Cross Spear (4★) |
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| Option 3 | Dragon's Bane (4★) |
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| Option 4 | Moonpiercer (4★) |
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Illuga Best Artifacts & Stats
Illuga's artifact selection focuses on meeting Energy Recharge needs for consistent Burst uptime and stacking Elemental Mastery to maximize team damage buffs.
| Illuga Artifacts & Stats | |
|---|---|
Silken Moon's Serenade |
|
Main Stat |
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Sub Stat | Energy Recharge > Elemental Mastery > CRIT Rate > DEF% |
Illuga Best Team Compositions
Illuga excels in teams with at least 3 Hydro or Geo characters to maximize his A4 Passive damage buffs. He pairs best with Zibai, Columbina, and Geo damage dealers.
1. Illuga-Zibai Lunar-Crystallize Team
This is Illuga's optimal team composition, designed specifically for Lunar-Crystallize reaction synergies with Zibai as the main DPS.
| Main DPS | Sub DPS | Support | Flex |
|---|---|---|---|
Zibai (5★) | Columbina (5★) | Illuga (4★) | Gorou (4★) |
Zibai (5★) | Columbina (5★) | Illuga (4★) | Zhongli (5★) |
Team Synergy: Columbina applies Hydro for Zibai's Lunar-Crystallize conversions. Illuga provides massive EM-scaling damage buffs (up to 200% of his EM for Lunar-Crystallize). Zhongli adds shields and RES shred, while Gorou amplifies Geo damage further.
2. Illuga-Geo Carry Team
If Zibai is unavailable, Illuga can support traditional Geo damage dealers, though with reduced effectiveness.
| Main DPS | Sub DPS | Hydro Enabler | Shielder |
|---|---|---|---|
Navia (5★) | Albedo (5★) | Illuga (4★) | Furina (5★) |
Navia (5★) | Chiori (5★) | Illuga (4★) | Zhongli (5★) |
Noelle (4★) | Albedo (5★) | Illuga (4★) | Furina (5★) |
Team Synergy: Illuga revitalizes Geo supports, bridging classic Geo resonance with enhanced damage buffs. Albedo/Chiori provide Geo Constructs for additional Nightingale's Song stacks. Furina enables some Lunar-Crystallize reactions while providing Fanfare stacks, while Zhongli offers shields and RES shred.
Illuga Constellations
Illuga is fully functional at C0 as a support character, though C1, C4 and C6 provide significant power spikes for team damage. As a 4-star character, constellations are more accessible than 5-stars.
Constellation Performance
| Rating | Explanation | |
| C1 | ★★★★ |
|
| C2 | ★★ |
|
| C4 | ★★★ |
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| C6 | ★★★★★ |
|
Constellation Effect
| Constellation | Effect |
| C1 | Vigilant Sentinel When Illuga is on the field, he will regain 12 Elemental Energy after a Geo-related Reaction is triggered. This effect can be triggered once every 15s. |
| C2 | Elk With Fanged Antlers When Elemental Burst Shadowless Reflection's Haunted Night's Oriole-Song effect is active, for every 7 stacks of Nightingale's Song consumed, Illuga will summon Aedon, dealing a single instance of Geo DMG to 1 nearby opponent. The DMG dealt is based on 400% of Illuga's Elemental Mastery and 200% of his DEF. This DMG is considered Elemental Burst DMG. |
| C3 | Earthshaking Bear Increases the Level of Elemental Burst Shadowless Reflection by 3.Maximum upgrade level is 15. |
| C4 | Solarhunter Wolf When Elemental Burst Shadowless Reflection's Haunted Night's Oriole-Song effect is active, nearby active party members will have their DEF increased by 200. |
| C5 | Hurricane Steed Increases the Level of Elemental Skill Dawnbearing Songbird by 3.Maximum upgrade level is 15. |
| C6 | Nightmare Orioles Enhances the Lightkeeper's Oath effect of the Passive Talent Torchforger's Covenant: For Geo DMG dealt to opponents, CRIT Rate is increased by 10%, CRIT DMG is increased by 30%.Moonsign: Ascendant Gleam:When characters are affected by Lightkeeper's Oath, Elemental Mastery is increased by 80.Requires the Passive Talent Torchforger's Covenant. |
Conclusion
This comprehensive guide demonstrates Illuga's position as a highly specialized Lunar-Crystallize support in Genshin Impact, primarily designed to amplify Zibai's damage output while providing valuable team-wide buffs. His unique ability to convert Elemental Mastery into substantial Geo damage buffs makes him invaluable for Lunar-focused team compositions. While his versatility is limited outside these specialized teams, within his niche he performs exceptionally well.
To fully prepare for Illuga's arrival and enhance your Geo team compositions, consider topping up on Genshin Impact resources through reliable top-up services to acquire the Primogems needed for his banner, ascension materials, and essential gear, ensuring that Illuga and your Geo characters are ready for the challenges ahead.
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