The Iron Trial teaser

For his whole life Cal has been warned of the magisterium. He is  told that it is related to the death of his mother and if he ever goes there he will die. His only chance to avoid the magisterium is to fail in the entrance exam that determines if he has sufficient magic to attend. The only problem is that he fails at failing. Join Cal as he adventures deep into the magisterium and encounters betrayal, friends, foes, and a shocking truth.