When equipped with Evil Spell:

Increases damage of Chain Reaction Shot by 20%.
Increases damage of Frenzy Shot by 40%.
Increases physical damage against enemies of every element by 20%.
Critical +5.

[iRO Description]
Set Bonus:
Evil Spell
Evil Vigor (Abyss Chaser)

increases Chain Reaction Shot damage by 20%,
increases Frenzy Shot damage by 40%,
increases physical damage against all property enemies by 20%,
CRI +5.