Every 2 refine rate, MATK + 5.
Every 3 refine rate, MATK + 2%, increases wind property magical damage by 2%.
Every 4 refine rate, increases Thundering Cannon and Cold Blooded Cannon damage by 5%.
If refine rate is 7 or higher, increases wind and water magical damage by 10%.
If refine rate is 9 or higher, S.MATK + 5.
If refine rate is 11 or higher, reduces variable casting time by 10%.

When equipped with Sky Frost Huuma, increases Thundering Cannon damage by 45%, increases wind property magical damage by 15%,
if the sum of refine rate of Sky Rune Crown (Shinkiro & Shiranui) and Sky Frost Huuma is 24 or higher, and grade of each is A or higher, and Cold Blooded Cannon is learned at level 10 or higher,
reduces skill cooldown of Thundering Cannon by 0.2 seconds,
when using Thundering Cannon, auto-cast Cold Blooded Cannon level 10.

[Bonus by grade]
[Grade D] S.MATK + 5.
[Grade C] Increases Thundering Cannon damage by 10%.
[Grade B] Increases magical damage against all size enemies by 10%.
[Grade A] Increases magical damage against all property enemies by 10%.
Class: Headgear Defense: 50
Location: Upper Weight: 0
Armor Level: 2
Required Level: 240
Jobs: Shinkiro, Shiranui