|Date|| Sometime in Moonvember
The Convergence is a time-travel ritual that allows a gifted wizard to consolidate selves from multiple timelines into a single timeline. Side effects of the ritual include lights turning purple and a huge rush of wind, followed by a massive release of energy and perhaps the destruction of several other timelines.
In Dungeons and Doodies, Cypress Evergreen performed the Convergence to bring all of his past selves to the QfA timeline. Doing so destroyed most of Blossom Prison, displacing a major chunk of it in time.