Maybe it's the high poison status from sightless raid!
oh and this perhaps
{ bonus3 bAddEffOnSkill,"RG_RAID",Eff_Poison,100; autobonus "{ bonus2 bAddRace,RC_NonBoss,10; bonus2 bAddRace,RC_Boss,10; }",5,5000,BF_WEAPON|BF_SHORT,"{ specialeffect2 EF_POTION_BERSERK; }"; },{},{}