Increases ATK by 12%/15%/18%/21%/24%. Casting Intro Skill or Echo Skill grants 32%/40%/48%/56%/64% Echo Skill DMG Amplification for 15/15/15/15/15s. When dealing Echo Skill DMG, Aero DMG ignores 10%/12.5%/15%/17.5%/20% of the target’s DEF for 6/6/6/6/6s.