Genos City

Genos City enters the battlefield tapped unless
you control more nonland permanents than lands.
{t}: Add {c}.
{1}, {t}: Add {u}{u} or {r}{r}. Spend this mana only
to cast artifact spells.
{3}, {t}: Add {u}{u}{r}{r}, then destroy Genos City.
Genos City deals 2 damage to you.