Lucia

Lucia's signature and her only option that interacts with Ether Veil. Grants massive HP and Energy Regen for maximum buff uptime, and gives the whole squad increased DMG and Max HP while Ether Veil is active — which is effectively permanent.

Off-field Energy Regen plus a short-duration DMG bonus against hit targets. Lucia's frequent inactive attacks keep the buff up consistently — extendable with brief on-field appearances during Stun windows.

Best generalist A-rank Support option. Team-wide ATK% is broadly useful, though Rupture agents are mostly HP scalers, so the ATK buff yields less value here than in Attack-based teams.

Situationally excellent — if the enemy is weak to Ether, the party-wide CRIT Rate boost becomes very powerful and can rival even her signature. Check enemy resistances before committing.