Marble Quarry

Marble Quarry enters the battlefield tapped.
{t}: Add {w} or {r}.
{t}: Add {2}. Spend this mana only to cast a
Monument spell.

"The marble flowing from our quarries is used in the
construction of all important edifices and monuments,
its shining lustre a beacon of the Empire's glory."
— Septimus Julii. Imperial Grand marshal.