A big section of haze dissolved or blew away then, revealing the presence of an enormous tree. Also, a section of the ground seemed to be glowing. There was a familiar feeling to this partial tableau...
"This is the place of your Pattern, isn't it?" I asked, as our way grew even clearer. "Fiona bought me here once."
"Yes," came the reply. (Merlin & Corwin, Prince of Chaos)
At the end of the Patternfall War, Prince Corwin used the Jewel of Judgement to inscribe a new Pattern. It seems to represent a new universe of Shadows, and of possibilities, while it stands as a third Power between Primal Pattern and the Logrus.