void ChangeAppearance(int nAppearance)
{
    SetCreatureAppearanceType(OBJECT_SELF, nAppearance);
}

void main()
{
    // Initial appearance change to 1994
    ChangeAppearance(1994);

    // Subsequent appearance changes at 2 second intervals
    DelayCommand(2.0, ChangeAppearance(1995));
    DelayCommand(4.0, ChangeAppearance(1996));
    DelayCommand(6.0, ChangeAppearance(1997));
    DelayCommand(8.0, ChangeAppearance(1998));
}