Barad-dur tower

{t}Add {b}{b}, or {b}{r}, or {r}{r} to your mana
pool.
Discard a card {t}Look the top three cards on top
of your library and put them on top of your
library in any order. Draw a card.
If you have into play a card called Sauron, the
dark lord and it's removed from play, remove
Barad-dur tower it's removed from play.