Minas Tirith

Minas Tirith enters the battlefield tapped.
{t}: Add {g}, {w} or {u} to your mana pool.
{2}{g}{w}{u}, {t}, Sacrifice another land: Return target attacking creature to its owner's hand.
A strong citadel it was indeed, and not to be
taken by a host of enemies, if there were any
within that could hold weapons.