you can make new items with no effects hard coded and add them using specialeffect though
1181,Tae_Goo_Lyeon,Tae Goo Lyeon,5,20,,2000,250,,1,2,0x00004082,2,2,34,4,90,1,3,{ bonus bFlee2,10; if(JobLevel>=70) autobonus "{ bonus bBaseAtk,50; }",10,10000,BF_WEAPON,"{ specialeffect2 EF_POTION_BERSERK; }"; if(getrefine()>8) { bonus bCastrate,-20; bonus bDelayRate,-20; } },{},{}