Unknown Intelligence Boots

Item ID 470074 Name Unknown Intelligence Boots
Old shoes that have been eroded by an unknown force.
Whenever the wearer uses magic, he can feel the boots react.
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For each 2 Refine Levels:
MATK +15
Increases Healing skills effectiveness by 2%.
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For each 3 Refine Levels:
MaxHP +80
MaxSP +20
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Refine Level +9:
Decreases Variable Casting Time by 7%.
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Refine Level +11:
Magical attacks have a random chance to increase INT by 175 for 10 seconds.
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Refine Level +13:
Increases Magical Damage with every element by 7%.
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[Bonus by Grade]
[Grade D]: Magical attacks have a random chance to increase INT by 25 for 10 seconds.
[Grade C]: Magical attacks have a random chance to increase INT by 25 for 10 seconds.
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Type: Shoes
Defense: 50
Weight: 65
Armor Level: 2
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Requirement:
Base Level 230
Weapon Level 0 Identifier MD_Airboat_Boots4
Attack 0 Type Armor
MATK 0 Equip Locations Footgear
Defense 50 Equippable Jobs None
Range 0 Equip Gender Both (Male and Female)
Slots 1 Equip Upper None
Weight 65 Min Equip Level 230
NPC Buy 0 Max Equip Level None
NPC Sell 0 Refineable Yes
Credit Price None Trade restriction None
Item Script 
.@r = getrefine();
bonus bMatk,15*(.@r/2);
bonus bHealPower,2*(.@r/2);
bonus bMaxHP,80*(.@r/3);
bonus bMaxSP,20*(.@r/3);
if (.@r>=9) {
   bonus bVariableCastrate,-7;
   if (.@r>=11) {
      autobonus "{ .@g = getenchantgrade(); if (.@g >= ENCHANTGRADE_D) { .@val = 25; if (.@g >= ENCHANTGRADE_C) { .@val += 25; } } bonus bInt,175+.@val; }",1,10000,BF_MAGIC;
      if (.@r>=13) {
         bonus2 bMagicAtkEle,Ele_All,7;
      }
   }
}

Set Script
Song of Hero
Unknown Intelligence Boots 
bonus bAllStats,10;
bonus bDelayrate,-25;