"Wizard 1 / Shadowcaster 3 / Noctumancer 10 / Mystic theurge 6"
And how are you qualifying for the lvl 2 divine spell requirement for MT with this setup? Either way, assuming you 'did' qualify for it, it'd end up with 17th level wizard with a CL of 20, and 13th level shadow magic. Assuming you did qualify for MT somehow, shadowcaster isnt a divine spell caster, and so wouldnt qualify for MT's bonus divine caster levels. But the MT isnt legal anyway unless you pulled off some shenanigans with feats. Even with ASP or SM youd need a level in a divine spell casting class, which none are listed above.