Chemosh, the Rift Demon

Fade, devoid (This card has no color.)
Whenever Chemosh, the Rift Demon attacks, defending player exiles to permanents their
control.
When Chemosh, the Rift Demon leaves the battlefield, shuffle it into it's owner's library
instead.
"He is. He isn't. He is all. He is none. He is. He is."