Refinements:

R1: Sky-ripping Dragon Spine

Increases all DMG by 8%. After using an Elemental Burst, a vacuum blade that does 80% of ATK as DMG to opponents along its path will be created when Normal or Charged Attacks hit. Lasts for 20s or 8 vacuum blades.

R2: Sky-ripping Dragon Spine

Increases all DMG by 10%. After using an Elemental Burst, a vacuum blade that does 100% of ATK as DMG to opponents along its path will be created when Normal or Charged Attacks hit. Lasts for 20s or 8 vacuum blades.

R3: Sky-ripping Dragon Spine

Increases all DMG by 12%. After using an Elemental Burst, a vacuum blade that does 120% of ATK as DMG to opponents along its path will be created when Normal or Charged Attacks hit. Lasts for 20s or 8 vacuum blades.

R4: Sky-ripping Dragon Spine

Increases all DMG by 14%. After using an Elemental Burst, a vacuum blade that does 140% of ATK as DMG to opponents along its path will be created when Normal or Charged Attacks hit. Lasts for 20s or 8 vacuum blades.

R5: Sky-ripping Dragon Spine

Increases all DMG by 16%. After using an Elemental Burst, a vacuum blade that does 160% of ATK as DMG to opponents along its path will be created when Normal or Charged Attacks hit. Lasts for 20s or 8 vacuum blades.

Your support is more valuable than a primogem.