The Abyss of Orth

The Abyss of Orth enters the battlefield tapped.
{1}, {t}: Add two in any combination of {c}, {b}, {r}, or {g}
If your commander is a Legendary Abyssal
creature, you may reveal The Abyss of Orth
from your library and put it into your starting
hand, If you do, Shuffle, Then put a card from
your hand on the bottom of your library.