Boreal Forest

At the beginning of your upkeep, put a season
counter on Boreal Forest. Then, if there are four
or more season counters on it, remove all season counters from Boreal Forest.
{t}: Add {s}. Activate this ability only if Boreal
Forest has no season counters on it.
{t}: Add {g}{g}{g}. Activate this ability only if
Boreal Forest has exactly two season counters on
it.