When equipped with Evil Spell:
Increases damage of Hack and Slasher by 20%.
Increases damage of Storm Slash by 40%.
Increases physical damage against enemies of every element by 20%.
Critical +5.

[iRO Description]
Set Bonus:
Evil Spell
Evil Vigor (Dragon Knight)

increases Hack and Slash damage by 20%,
increases Storm Slash damage by 40%,
increases physical damage against all property enemies by 20%,
CRI +5.