The Rune disc from Viking Discs was PDGA Approved on 1-17-2017.
“The unique feel on the Rune putter is amazing! Its low profile with slow speed and minimal bead will make you connect with this disc immediately. The Rune bead helps the flight path last longer. You can trust your discs even after using them a long time. Rune will hold any line you throw. Rune is great for putting, stable enough to fight the wind, and flight path is easy to predict. Speed 2 Glide 4 Turn 0 Fade 0" - by Viking Discs