The White-Gold Tower

The White-Gold Tower enters the battlefield
tapped.
When the White-Gold Tower enters the battlefield, sacrifice it unless you pay {1}.
{t}: Add one mana of any color.
{3},{t}: Search your library for a District card and
put it onto the battlefield tapped, then if you
control eleven District cards with different
names, you win the game. Otherwise, shuffle the
White-Gold Tower into your library. Activate
only as a sorcery.