void main()
{
    object  user=GetLastUsedBy();
    if(!GetIsObjectValid(user)||!GetIsPC(user))
        return; // We only do this for PC's
    // Set up our fire-and-forget visual effect.
    // Any of the VFX_FNF constants should work here, depending on what you want.
    effect  eff=EffectVisualEffect(VFX_IMP_HARM);
    object target=GetObjectByTag("NW_Frozenportal009");
    AssignCommand(user,ClearAllActions());
    // Fire our visual effect
    ApplyEffectToObject(DURATION_TYPE_INSTANT,eff,OBJECT_SELF);
    AssignCommand(user,ActionJumpToObject(target));
}