Noble Sorcerer Robe with the emblem of Rune Midgarts.

MATK +75.

Refine Level +7: Decreases variable cast time by 15%.
Refine Level +9: Increases Water elemental magic damage by 7%.

When equipped with Imperial Magic Manteau, Imperial Magic Boots and Imperial Magic Ring:
MATK +2%.
Decreases variable cast time of all skills by additional 5%.
Increases damage of Diamond Dust by 10%.

If total refine level of Imperial Dust Robe, Imperial Magic Manteau and Imperial Magic Boots is +27 or higher:
MATK +3%.
Decreases variable cast time of all skills by additional 5%.
Increases damage of Diamond Dust by additional 15%.