The Magician Part Deux - New Archetypes

From publisher blurb:

This issue introduces three new arcane archetypes built upon the concept of the literate caster that prefers to cast his spells at the moment's notice. Rather than spending hours studying, the magician may spontaneously prepare his spells when needed, though at a cost of extra casting time and a bit more vulnerability due to the intense concentration needed. This supplement includes the Arcane Magician (wizard archetype), the Magician Arcanist (arcanist archetype), and the arcane magister (magus archetype).