Expedition Druid

Explore {1}{g}({t}, {1}{g}: Reveal the top card of your library. If it's a land, put a +1/+1 counter on this creature.)
{t}: Add {g}to your mana pool.
{t}: Add {g}to your mana pool for each +1/+1 counter on Expedition Druid.
"As I grow in learning, my magics grow in strength."