Patent Royal Bow

Item ID 700018 Name Patent Royal Bow
An ancient hero's bow, handed down from the now forgotten royal family.
The ancient power awakened and began to exert its natural power.
It resonate with Great Hero's Boots.
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For each 2 Refine Levels:
ATK +15
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For each 3 Refine Levels:
Increases damage of Arrow Storm by 12%.
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Refine Level +7:
Increases Attack Speed (Decreases Delay After Attack by 10%).
Increases Ranged Physical Damage by 15%.
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Refine Level +9:
Increases Ranged Physical Damage by additional 12%.
Increases Critical Damage by 10%.
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Refine Level +11:
Increases damage of Sharp Shooting by 20%.
Decreases After Skill Delay by 10%.
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When equipped with Great Hero's Boots:
DEX +10, ATK +7%.
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Type: Bow
Attack: 205
Weight: 120
Weapon Level: 4
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Requirement:
Base Level 150
Ranger and Shadow Chaser
Weapon Level 4 Identifier Up_Royal_Bow_K
Attack 205 Type Weapon - Bow
MATK 0 Equip Locations Two-Handed
Defense 0 Equippable Jobs Thief, Hunter, Rogue
Range 5 Equip Gender Both (Male and Female)
Slots 2 Equip Upper None
Weight 120 Min Equip Level 150
NPC Buy 0 Max Equip Level None
NPC Sell 0 Refineable Yes
Credit Price None Trade restriction None
Item Script 
.@r = getrefine();
bonus bBaseAtk,.@r/2*15;
bonus2 bSkillAtk,"RA_ARROWSTORM",12*(.@r/3);
if (.@r>=7) {
   bonus bAspdRate,10;
   bonus2 bWeaponDamageRate,W_BOW,15;
}
if (.@r>=9) {
   bonus bLongAtkRate,12;
   bonus bCritAtkRate,10;
}
if (.@r>=11) {
   bonus2 bSkillAtk,"SN_SHARPSHOOTING",20;
   bonus bDelayrate,-10;
}

Set Script
Great Hero Boots
Patent Royal Bow 
bonus bDex,10;
bonus bAtkRate,7;
Dark Shadow Scarf
Patent Royal Bow 
bonus2 bSkillCooldown,"RA_ARROWSTORM",-2500;
[Not For Sale] Dark Shadow Scarf
Patent Royal Bow 
bonus2 bSkillCooldown,"RA_ARROWSTORM",-2500;
Ring of Unknown Hero (Ranger)
Patent Royal Bow 
bonus bLongAtkRate,8;
if (getequiprefinerycnt(EQI_HAND_R)>=11)
   bonus2 bSkillAtk,"RA_ARROWSTORM",(readparam(bDex)+readparam(bLuk))/12;
[Not For Sale] Ring of Unknown Hero (Ranger)
Patent Royal Bow 
bonus bLongAtkRate,8;
if (getequiprefinerycnt(EQI_HAND_R)>=11)
   bonus2 bSkillAtk,"RA_ARROWSTORM",(readparam(bDex)+readparam(bLuk))/12;