Pantheon of the Forest

This spell can't be countered
{t}{4}{g}{g}: Choose one:
-Search your library for up to four lands of any
color, and put them on the battlefield
-At the beginning of your next upkeep,
{6}{g}{g}: If you do, you can play permanents
without paying their mana cost
{t}: add {g}{g} to your mana pool