Reclusive Mage by Inadvisably Compelled

The Guild of Arcane Regulation has fractured, and new forces move on the board. Callum cannot quite declare victory, for even a weakened GAR still forces him to hide from the world at large, yet he is no longer prepared to run. Instead he builds his own strengths to stand against those who wish to do him harm.

Change, once started, is hard to stop. Callum's actions have brought change to the world of the supernatural, but that can bring chaos and destruction even as he eliminates tyranny and corruption. He has to move beyond being one man against the world, and stand in the world he's made.