void main()
{
    object oPC=GetPCSpeaker();
    object oMe=OBJECT_SELF;
    object oPotion=GetItemPossessedBy(oMe,"NW_IT_MPOTION008");
    ChangeToStandardFaction(oMe,STANDARD_FACTION_HOSTILE);
    if (GetIsObjectValid(oPotion))
    { // invisible then attack
        DestroyObject(oPotion);
        AssignCommand(oMe,ActionPlayAnimation(ANIMATION_FIREFORGET_DRINK,1.0,3.0));
        AssignCommand(oMe,ActionCastSpellAtObject(SPELL_INVISIBILITY,oMe,METAMAGIC_ANY,TRUE,0,PROJECTILE_PATH_TYPE_DEFAULT,TRUE));
        AssignCommand(oMe,ActionAttack(oPC));
    } // invisible then attack
    else
    { // attack
        AssignCommand(oMe,ActionAttack(oPC));
    } // attack
}