Aether, like Lumine, has the unique ability to switch between elements in Genshin Impact, providing a versatile toolkit for various combat scenarios. Given his similarities with Lumine, the builds for Aether will follow similar principles, adjusted for personal playstyle or team composition preferences. Here’s how to optimize Aether:
Suggested Weapons 
•Skyward Blade: Offers high base ATK, Energy Recharge, and a speed boost, which is universally beneficial for Aether's elemental forms.
•Favonius Sword: Great for energy generation across all elements, helping maintain high uptime on his Elemental Burst.
•Sacrificial Sword: Its ability to reset the Elemental Skill cooldown can be very useful for continuous elemental application or support.
Anemo Build
Artifacts
•4-piece Viridescent Venerer: For increasing Anemo damage and reducing enemy elemental resistance through Swirl reactions.
Stat Priorities
•Sands: ATK% or Elemental Mastery for enhanced Swirl reactions.
•Goblet: Anemo DMG Bonus
•Circlet: CRIT Rate or CRIT DMG
Geo Build
Artifacts
•4-piece Archaic Petra: To capitalize on Geo damage bonuses when picking up crystallize shields.
•2-piece Archaic Petra + 2-piece Gladiator's Finale: For a balanced increase in Geo damage and overall ATK.
Stat Priorities
•Sands: ATK%
•Goblet: Geo DMG Bonus
•Circlet: CRIT Rate or CRIT DMG
Electro Build
Artifacts
•4-piece Thundering Fury: Enhances Electro reactions, reducing Elemental Skill cooldown upon reaction trigger.
•2-piece Thundering Fury + 2-piece Gladiator's Finale: Boosts Electro DMG alongside ATK%.
Stat Priorities
•Sands: ATK%
•Goblet: Electro DMG Bonus
•Circlet: CRIT Rate or CRIT DMG
Dendro Build
Artifacts
•4-piece Deepwood Memories: Crucial for reducing enemy Dendro resistance, amplifying his and his team's Dendro damage.
•4-piece Gilded Dreams: For enhancing reaction damage through Elemental Mastery.
Stat Priorities
•Sands: Elemental Mastery for reaction teams or ATK%
•Goblet: Dendro DMG Bonus
•Circlet: Elemental Mastery or CRIT Rate if focusing on raw damage
Talent Leveling:
•Elemental Skill and Burst: These should be prioritized for leveling across all elements as they form the core of Aether's utility and damage.
•Normal Attack: Should also be leveled, though secondary to his elemental talents, to ensure consistent damage output when using his sword attacks.
Team Composition
•Adaptable Support: Aether's role can change with his element, fitting into:
•Anemo: Teams needing Anemo application for Swirl, crowd control, or Viridescent Venerer's debuff.
•Geo: Provides structure with his Geo constructs, good for teams needing resonance or crystallize reactions.
•Electro: Excellent for teams focused on Electro reactions like Overload, Electro-Charged, or Superconduct.
•Dendro: Useful in Bloom, Hyperbloom, or Aggravate compositions, enhancing or triggering these reactions.
Playstyle Tips 
•Elemental Flexibility: Change Aether's element based on the domain, boss, or the elemental weaknesses of enemies for optimal performance.
•Skill and Burst Synergy: Use his Elemental Skill to set up or complement his Burst. The placement and timing can greatly affect battlefield control and damage output.
•Energy Management: Given his versatility, managing energy for his Burst can be crucial. Use weapons or artifacts that help with Energy Recharge.
•Reactions: Especially in Dendro form, focus on setting up and capitalizing on elemental reactions for increased damage.
Aether's strength lies in his ability to adapt to any team's elemental needs, making him a jack-of-all-trades in Genshin Impact. His builds should reflect this adaptability, focusing on enhancing his current elemental form while maintaining enough versatility to switch roles as needed.
