Orthanc

Indestructible
Orthanc enters the battlefield tapped.
{t}: Add {w}, {u} or {b} to your mana pool.
{2}{w}{u}{b}, {t}, Sacrifice another land: Target opponent loses 2 life and you gain 2 life.
In the moonlight, the Ring of Isengard looked
like a graveyard of unquiet dead. For the ground trembled.