Phyrexian Tower

{t}: Add {c}
{t}, Sacrifice a creature: Add {b}{b}.

"There he took up again his great Ring in
Barad-Dur, and dwelt there, dark and
silent, until he wrought himself a new guise,
an image of malice and hatred made visible;
and the Eye of Sauron the Terrible few
could endure." —J.R.R. Tolkien