Astra Yao
An Ether Support who pioneered the Chain-swap playstyle: her Idyllic Cadenza state keeps her on-field during ally switches while she pumps team ATK and CRIT DMG. She remains a Tier 0 support benchmark in v3.0 — one of the most universal buffers in the game.
Role
Support
Core Mechanic
Support — team-wide ATK% and CRIT DMG buffs plus Ultimate healing, fueled by rapid Quick-Assist rotations.
Rarity
S-Rank
Element
Ether
Endgame Tier
EndgameS+Recommended Builds
Universal Buff Support
Full guide →Max ATK + Energy Regen to fuel Quick Assists and Core buffs (~3430 ATK target).
Best Gear
- Elegant Vanity (W-Engine) — Signature BiS; ATK plus a team DMG buff on Quick Assist.
- Astral Voice (4pc) + Swing Jazz (2pc) — Astral Voice passes a DMG buff to the next on-field agent, aligning with her swap kit.
Strengths
- +Powerful team-wide ATK + CRIT DMG buffs from Core and Special.
- +Team healing through her Ultimate.
- +Extremely versatile — fits nearly any team.
Weaknesses
- −Off-field personal damage is negligible.
- −Wants high ATK and Energy Regen to hit full buff value.
Why This Tier
Tier 0 Support; a staple enabler across Shiyu Defense and Deadly Assault comps.
Skills
CapriccioWindchimes & OathsTipsy ConcertoFantasian SonataGraceful Andante
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