Sealed Eastern Sword

Item ID 21049 Name Sealed Eastern Sword
An ancient sword said has cut many eastern demons.
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For each 2 Refine Levels:
ATK +10
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For each 3 Refine Levels:
Increases damage of Sonic Wave by 10%.
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Refine Level +7:
Random chance to auto-cast Level 2 Sonic Wave when dealing physical damage.
(Or activates higher skill Level based on wielder's learned skill Level.)
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Refine Level +9:
Indestructible in battle
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Type: Two-Handed Sword
Attack: 180
Weight: 0
Weapon Level: 4
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Requirement:
Base Level 99
Rune Knight
Weapon Level 4 Identifier Evt_Oriental_Sword
Attack 180 Type Weapon - Two-Handed Sword
MATK 0 Equip Locations Two-Handed
Defense 0 Equippable Jobs Knight
Range 1 Equip Gender Both (Male and Female)
Slots 2 Equip Upper Third, Third Upper, Third Baby
Weight 0 Min Equip Level 99
NPC Buy 0 Max Equip Level None
NPC Sell 0 Refineable Yes
Credit Price None Trade restriction Can't be dropped, Can't be traded with player, Can't be put in Cart, Can't be put in Storage, Can't be put in Guild Storage, Can't be attached in Mail, Can't be auctioned
Item Script 
.@r = getrefine();
bonus bBaseAtk,10*(.@r/2);
bonus2 bSkillAtk,"RK_SONICWAVE",10*(.@r/3);
if (.@r>=7) {
   bonus5 bAutoSpell,"RK_SONICWAVE",max(2,getskilllv("RK_SONICWAVE")),100,BF_SHORT|BF_WEAPON,1;
}
if (.@r>=9) {
   bonus bUnbreakableWeapon;
}