Bronze Tome Paper Charm

Paper Aid. While wearing this charm on your person, you can activate it as part of making an Arcana check to be aided by its magic. After you make an Arcana check,you can choose to activate the magic of the charm. you can choose to activate the magic of the charm. You have to do so before it is announced whether the check was successful or not. When you do, you can reroll the the Arcana check. You must use the new result, even if it is a 1. This charm has 1d4 uses, after the paper charm has been activated for its final use, it destroys itself in a small, harmless burst of bronze sparks that is only visible to you.