Natural Convergence

{t}: Add {g}{g}, {g}{u} or {u}{u}.
When you play Natural Convergence, exile
it with two mana counters on it. At the beginning of your upkeep, remove a mana counter from Natural Convergence, then if it
has no mana counters on it, put it onto the battlefield. (Playing Natural Convergence still counts as playing a land the turn you play it.)