Unknown Dexterity Boots

Item ID 470072 Name Unknown Dexterity Boots
Old shoes that have been eroded by an unknown force.
Whenever the wearer concentrates, he can feel the boots react.
_______________________
For each 2 Refine Levels:
ATK +15
_______________________
For each 3 Refine Levels:
MaxHP +110
MaxSP +10
_______________________
Refine Level +9:
Increases Attack Speed (decreases After Attack Delay by 7%).
_______________________
Refine Level +11:
Physical and magical attacks have a random chance to increase DEX by 175 for 10 seconds.
_______________________
Refine Level +13:
Decreases Fixed Casting Time by 0.5 seconds.
_______________________
[Bonus by Grade]
[Grade D]: Physical and magical attacks have a random chance to increase DEX by 25 for 10 seconds.
[Grade C]: Physical and magical attacks have a random chance to increase DEX by 25 for 10 seconds.
_______________________
Type: Shoes
Defense: 60
Weight: 70
Armor Level: 2
_______________________
Requirement:
Base Level 230
Weapon Level 0 Identifier MD_Airboat_Boots2
Attack 0 Type Armor
MATK 0 Equip Locations Footgear
Defense 60 Equippable Jobs None
Range 0 Equip Gender Both (Male and Female)
Slots 1 Equip Upper None
Weight 70 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 bBaseAtk,15*(.@r/2);
bonus bMaxHP,110*(.@r/3);
bonus bMaxSP,10*(.@r/3);
if (.@r>=9) {
   bonus bAspdRate,7;
   if (.@r>=11) {
      autobonus "{ .@g = getenchantgrade(); if (.@g >= ENCHANTGRADE_D) { .@val = 25; if (.@g >= ENCHANTGRADE_C) { .@val += 25; } } bonus bDex,175+.@val; }",1,10000,BF_WEAPON|BF_MAGIC;
      if (.@r>=13) {
         bonus bFixedCast,-500;
      }
   }
}

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