But The Battle Isn’t Over is a 5 star The Harmony Light Cones.

Heir

Increases the wearer’s Energy Regeneration Rate by 10%/12%/14%/16%/18% and regenerates 1 Skill Point when the wearer uses their Ultimate on an ally. This effect can be triggered after every 2 uses of the wearer’s Ultimate. When the wearer uses their Skill, the next ally taking action deals 30%/35%/40%/45%/50% more DMG for 1 turn(s).