Ros Tower

{t} Add one mana of any color to your mana pool.
Ros Tower does not untap during your next
untap step.
{2}{t} Until end of turn, lands you control do not
produce mana when tapped, and instead have
"{t} Gain 1 Life."
The Ros were a network of autonomous city-states, yet
the closeness between the Towers and Tyrania itself led
some to doubt how independent the Ros truly were.