Orzhova, Orzhov Hall

{t}: Add {w} or {b}.
{x}, {t}: Create a Black and White Contract artifact token with Payoff—{x}, sacrifice this artifact.
{w}{w}{w}{b}{b}{b}, {t}, sacrifice Orzhova, Orzhov Hall: Search your library for a card called The Council Immortal, reveal it, and put it
into your hand. Then, shuffle your library.