The one ring

{t} - add {b}{b}{b} to your mana pool, activate this ability only to cast a Sauron spell.
{1}{b}{r}{t} - reveal the top three card of your
library, you may put a Sauron spell among them
into your hand, put the rest in your graveyard.
{1}{b}{b}{t} - gain control of target human with
toughness of 3 or less.