Arcanist's Vestment

3-Piece Set Bonus :
INT +60, Max MP +10%
Magical attack +15% when staff is equipped

4-Piece Set Bonus :
Decreases damage aggro by 18%.
When casting skills, there is an 18% chance to deal damage twice.
Increases the damage of Frostfire Cone, Thunderfire Spear, and Ice Thunder Prison skills by 15%.

5-Piece Set Bonus :
+20% CRIT Rate for magic attacks
Reduces the cooldown of Lightning Coat, Eternal Ice Coffin, and Flame Rush skills by 10 seconds
18% chance to gain the "Radiant Butterfly" state when attacking
Radiant Butterfly :
Increases casting speed and Magic CRIT DMG by 25%
Lasts for 6 seconds