Benefit: The magus may expend 1 point from his arcane pool as a swift action to grant any armor he is wearing a +1 enhancement bonus to AC for 1 minute. For every four levels beyond 1st, the armor gains another +1 enhancement bonus, to a maximum of +5 at 17th level. These bonuses can be added to the armor, stacking with existing armor enhancement to a maximum of +5. Multiple uses of this ability do not stack with themselves.
A magus of 5th level or higher can use these bonuses to add any of the following armor properties: fortification (light, moderate of heavy), ghost touch, invulnerability, and spell resistance. Adding these properties consumes an amount of bonus equal to the property’s base price modifier. The magus can also grant the following properties using the listed bonus cost: energy resistance (+4), glamered (+1), improved slick (+3), improved shadow (+3), jousting[APG] (+2), slick (+2), and shadow (+2). These properties are added to any the armor already has, but duplicates do not stack. If the armor is not magical, at least a +1 enhancement bonus must be added before any other properties can be added. These bonuses and properties are decided when the arcane pool point is expended and cannot be be changed until the next time the magus uses this ability. These bonuses and properties are not functional if the armor is worn by anyone other than the magus.
A magus can only enhance one suit of armor in this way at a time. If he uses the ability again, the first use immediately ends.
Ultimate Options: New Magus Arcana