Game Mechanic Guide

Sustain Units in Honkai: Star Rail — Guide 2026

Sustains keep the team alive and often add damage. Fu Xuan shares damage and grants team CRIT; Aventurine shields plus follow-up damage; Luocha auto-heals; Gallagher is the Break-team healer. Choose by team, not by tier alone.

Shield vs Heal

Shielders (Fu Xuan, Aventurine, March 7th) prevent damage and enable no-healer cores; healers (Luocha, Bailu, Natasha, Gallagher) recover it. Hypercarry teams prefer a shielder who also buffs.

Premium Picks

Fu Xuan enables aggressive play with team CRIT and damage share. Aventurine adds real follow-up damage for aggressive teams. Luocha is the low-maintenance healer for any core.

Free Picks

March 7th (shield) and Natasha (heal) cover new accounts. Gallagher is free and the best sustain in Super Break teams because he also deals Break damage.