Kooradore Peaks

{t}: Add {e} to your mana pool.
Whenever Kooradore Peaks enters the battlefield,
You may create an Undiscovered Sanctum
emblem. If you do, put Kooradore Peaks onto
the Undiscovered Sanctum face down. (An Undiscovered Sanctum is an additional deck, that
you own. Undiscovered Sanctums are also Emblems. Undiscovered Sanctums you control is treated as if it's
your library).