Lonely Ruins

At the end of each of your turns where you didn't
place a land, place a charge counter on Lonely
Ruins.
{t}: Add {c} for each charge counter on Lonely
Ruins.
{t}Add one mana of any color for each charge
counter on Lonely Ruins. Activate only on your
turn and if you didn't play a land this turn. You
can't play lands until end of turn.