Elemental Magic

Publisher's blurb: In a world where things are arbitrarily categorized... Welcome to Elemental Magic, Codex Five of the Enchiridia Mysteria! Wield the power of air, earth, fire, and water in this collection that is meant to flesh out thin places in the spell lists while also trying new things (I also found some surprising space to cover basic effects, like setting creatures on fire or summoning rain).