Runic Crafter

Your study of secret runes leaves you well practiced in crafting their more common cousins. You gain the Magical Crafting skill feat, even if you don't meet the prerequisites. You automatically learn the formulas for the fundamental armor runes (armor potency and resilient), fundamental shield rune (reinforcing), and fundamental weapon runes (weapon potency and striking) as soon as your level equals each item's. You practice your runes so thoroughly you can draw them by heart and thus do not need a formula book to record the formula of any runes you learn how to create.

At 4th level and every 2 levels thereafter, you learn the formula for an armor or weapon property rune of your choice. The rune must be of your level or lower, and can be a common rune or another rune to which you have access.