City 1, Metal Masterpiece

City 1, Metal Masterpiece enters the battlefield
tapped.
{t}: Add {c}.
{t}: Add {w}, {u} or {b} spend this mana only
on a robot permadent spell. If you do it enters
the battlefield with an AI counter on it.
A city biult entirely by machine minds. How could it
be anything but perfect.
—Yiv, The Master