HP increased by 20/25/30/35/40%. When an Elemental Skill hits opponents, you gain the Grand Hymn effect for 20s. This effect increases the equipping character's Elemental Mastery by 0.12/15/18/21/24% of their Max HP. This effect can trigger once every 0.3s. Max 3 stacks. When this effect gains 3 stacks, or when the third stack's duration is refreshed, the Elemental Mastery of all nearby party members will be increased by 0.2/25/3/35/4% of the equipping character's max HP for 20s.