Blessed Knife

Item ID 510070 Name Blessed Knife
A knife said to have been used by brave heroes in the past.
It is said that it can only be used by those who have received the angel's blessing.
It resonates with Ancient Hero's Boots.
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For each 2 Refine Levels:
ATK +10
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For each 3 Refine Levels:
Increases damage of Back Stab by 20%.
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Refine Level +9:
Increases Attack Speed (decreases After Attack Delay by 10%).
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Refine Level +11:
Enables the use of Level 7 Fatal Menace.
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When equipped with Ancient Hero's Boots:
Random chance to increase STR by 20 and ATK by 15% for 7 seconds when dealing physical damage.
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Type: Dagger
Attack: 200
Weight: 120
Weapon Level: 4
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Requirement:
Base Level 100
Novice
Weapon Level 4 Identifier Blessed_Knife
Attack 200 Type Weapon - Dagger
MATK 0 Equip Locations Main Hand
Defense 0 Equippable Jobs Novice, Super novice
Range 1 Equip Gender Both (Male and Female)
Slots 2 Equip Upper None
Weight 120 Min Equip Level 100
NPC Buy 0 Max Equip Level None
NPC Sell 0 Refineable Yes
Credit Price None Trade restriction None
Item Script 
.@r = getrefine();
bonus bBaseAtk,10*(.@r/2);
bonus2 bSkillAtk,"RG_BACKSTAP",20*(.@r/3);
if (.@r>=9) {
   bonus bAspdRate,10;
   if (.@r>=11) {
      skill "SC_FATALMENACE",7;
   }
}

Set Script
Blessed Knife
Ancient Hero Boots 
autobonus "{ bonus bAtkRate,15; bonus bStr,20; }",1,7000,BF_WEAPON;
Blessed Knife
[Not For Sale] Ancient Hero Boots 
autobonus "{ bonus bAtkRate,15; bonus bStr,20; }",1,7000,BF_WEAPON;