Coalition Wars
Actually there is a case of one in the past, he/she disappeared attempting to leave orbit(Though I'll have to delve heavily in the library to remember where the notation was). Also, it points to the Whalesingers Prophecy that a Cosmoknight will be instrumental in the defeat of the Lord of the Depths.
Also, I didn't mean he was a cosmoknight in Pre-Rifts Earth, he was just some guy. The Cosmic Forge endows him as he's flung bodily through a Rift.
This message was last edited by the user at 23:36, Wed 21 Feb 2018.