One who lives Alone

Flying, Indestructible
When One who lives alone enter the battlefield
exile all creatures you control.
If a creature you control enters the battlefield
shuffle One who lives alone into the deck.
On top of Mt Lumaria many great flashes of light
have been observed. This gave rise to many myths
and legends the most predominant is that it is the home
of a angel, which is ridiculous by the way
-Stalia Survival Guide, 3rd Edition.