You have learned how to cast spells while wearing armor.
Prerequisites: Light Armor Proficiency, caster level 3rd.
Benefit: As a swift action, reduce the arcane spell failure chance due to the armor you are wearing by 10% for any spells you cast this round.
Pathfinder RPG Core Rulebook. Copyright 2009, Paizo Publishing, LLC; Author: Jason Bulmahn, based on material by Jonathan Tweet, Monte Cook, and Skip Williams.