if (GetHasEffect(EFFECT_TYPE_DARKNESS, oTarget) == TRUE)
        return;
   
    effect eAOE;
    //Search through the valid effects on the target.
    eAOE = GetFirstEffect(oTarget);
    while (GetIsEffectValid(eAOE))
    {
        int nID = GetEffectSpellId(eAOE);
        //If the effect was created by the spell then remove it
        if( nID == SPELL_DARKNESS ||
            nID == SPELLABILITY_AS_DARKNESS  ||
            nID == SPELL_SHADOW_CONJURATION_DARKNESS ||
            nID == 688 || // GWildShape_DriderDarkness
            nID == 842 || // SD_TEMNOTA
            nID == 865 || // FEAT_CERNOKNEZNIK_INVOKACE1_TEMNOTA
            nID == 911 // FEAT_SUBRACE_DROW_TEMNOTA
        )
        {
            RemoveEffect(oTarget, eAOE);
        }
        //Get next effect on the target
        eAOE = GetNextEffect(oTarget);
    }