Rune Lore
You have learned one of the Runes of the Eldar. You know one rune (so long as you meet all the prerequisites for that rune), and cannot learn any more unless taking this feat a second (or more) time.
Whenever you finish a long rest, you can touch a number of objects equal to the number of runes you know, and you inscribe a different rune onto each of the objects. To be eligible, an object must be a weapon, a suit of armor, a shield, a piece of jewelry, or something else you can wear or hold in a hand. Your rune remains on an object until you finish a long rest, and an object can bear only one of your runes at a time.