(/\) Aeowin, Summer Bloom

You may only cast this spell if you control a
higher combined total of mountains and forests
than you do islands and swamps.
Whenever a player taps a land for mana, that
player adds one mana of any type that land
produced.
{x}{x}{w}{w}{g}{g}: Populate, then distribute X
+1/+1 counters among creatures you
control.