Binder 2(1) / Wizard 3(4) / Anima Mage 10 / Shadowcraft Mage 5 1 and 4 still meets your two base, two PrC req's
Druid3, Wizard2, Arcane Hierophant10, Mystic Theurge5 - yea ol' MT is garbages, but it fits the req's more easily than Fochlucan Lyrist
Druid5, Planar Shepherd10, PrC Ranger2(Mystic and Wildshaping if you can get all of that approved) - whatever3(with wildshape and casting)
^^for sword of the arcane order of course^^
wait, I think we can do better,
Binder 2/Archivist 3/Anima Mage(divine adaptation)10/Shadowcraft Mage 5(provided you can find a divine version of a shadow spell by then)
possibly Tainted Sorcerer 1 instead of 1 level of binder for free metamagic
edit: shadow domain! yes!