There are Potency (and Aspect and Essence) Runestones scattered throughout the world.
![](https://sp.yimg.com/ib/th?id=JN.H7QaaZanFtYVMxumIUfF8A&pid=15.1&P=0)
As you can see, Potency Runes have a blue flame in the middle. Essence Runes have a yellow flame, and Aspect Runes have a red flame. You shouldn't skip any of them, though!
This is the only way I know how to get Runes.
There are Potency (and Aspect and Essence) Runestones scattered throughout the world.
![](https://sp.yimg.com/ib/th?id=JN.H7QaaZanFtYVMxumIUfF8A&pid=15.1&P=0)
As you can see, Potency Runes have a blue flame in the middle. Essence Runes have a yellow flame, and Aspect Runes have a red flame. You shouldn't skip any of them, though!
This is the only way I know how to get Runes.