why dont make the your duplicate MVP mob then use mob avail so you don't need patching sprite files only reloading server db files example: Baphomet which is Mob#1039 and i make a duplicate Mob#5000 mob_db.txt 1039,BAPHOMET,Baphomet,Baphomet,81,668000,0,107250,37895,2,3220,4040,35,45,1,152,30,85,120,95,10,12,2,6,67,0x37B5,100,768,768,576,53625,607,2000,750,500,923,5000,1466,400,2256,300,1476,50,714,500,5160,10,985,5432,984,4171,0,0,0,0,4147,1 your custom baphomet 5000,BAPHOMET,Baphomet,Baphomet,81,668000,0,107250,37895,2,3220,4040,35,45,1,152,30,85,120,95,10,12,2,6,67,0x37B5,100,768,768,576,53625,607,2000,750,500,923,5000,1466,400,2256,300,1476,50,714,500,5160,10,985,5432,984,4171,0,0,0,0,4147,1 mob_avail.txt //just check this file //5000,1039 //mob id#5000 will use mob id sprite #1039