Long Night's Oath

After the equipping character's Plunging Attack/Charged Attack/Elemental Skill hits an opponent, they will gain 1/2/2 stack(s) of "Radiance Everlasting." Plunging Attacks, Charged Attacks, or Elemental Skills can each trigger this effect once every 1s. Radiance Everlasting: Plunging Attacks deal 15% increased DMG for 6s. Max 5 stacks. Each stack's duration is counted independently.