Emerald Ring

Item ID 28573 Name Emerald Ring
A beautiful ring with a big shiny emerald inserted into it.
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AGI +5
DEX +5
VIT +5
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Decreases SP Consumption of Improvised Song by 18.
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For each Base Level:
Increases damage of Double Strafe by 1%.
Increases damage of Arrow Shower by 1%.
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For each 10 Base Level:
Increases damage of Severe Rainstorm by 2%.
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For each 2 Level of Double Strafe:
AGI +1, VIT +1, DEX +1
ATK +20
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Type: Accessory
Weight: 30
Armor Level: 1
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Requirement:
Base Level 100
Weapon Level 0 Identifier Emerald_Ring
Attack 0 Type Armor
MATK 0 Equip Locations Accessory Left/Right
Defense 0 Equippable Jobs None
Range 0 Equip Gender Both (Male and Female)
Slots 1 Equip Upper None
Weight 30 Min Equip Level 100
NPC Buy 20 Max Equip Level None
NPC Sell 10 Refineable No
Credit Price None Trade restriction None
Item Script 
.@a = getskilllv("AC_DOUBLE")/2;
bonus bAgi,5+(.@a);
bonus bVit,5+(.@a);
bonus bDex,5+(.@a);
bonus bBaseAtk,(20*.@a);
bonus2 bSkillAtk,"AC_DOUBLE",BaseLevel;
bonus2 bSkillAtk,"AC_SHOWER",BaseLevel;
bonus2 bSkillAtk,"WM_SEVERE_RAINSTORM_MELEE",2*(BaseLevel/10);
bonus2 bSkillUseSP,"WM_RANDOMIZESPELL",18;

Set Script
Emerald Ring
Jade Crystal Boots 
bonus2 bSkillCooldown,"WM_SEVERE_RAINSTORM",-1000;
bonus2 bSkillAtk,"WM_SEVERE_RAINSTORM_MELEE",20;
bonus2 bSkillAtk,"RA_ARROWSTORM",40;