The first time I came across this powerful symbol was in Robert Jordan’s fantasy epic series called The Wheel of Time. The protagonist of this series is literally called the Dragon Reborn who reincarnates across the ages to both break and save the world over and over again. Can this cycle be stopped? Read to find out!
The Wheel of Time symbol itself is a modification of the Ouroboros Circle which you have posted above and it is interesting to see how Robert Jordan integrates european and eastern mythos into his story on several different themes, names, plots etc. Your post on the dragon swallowing its tail had me musing.