Gaea, Mother of Nature

Trample, Vigilance
As Gaea, Mother of Nature enters play, it's power
is equal to the number of forests and green
permanents in play. It's defense is equal to the
number of plains and white permanents in play.
If Gaea, Mother of Nature has 15 or more attack
and defense, this creature gains lifelink, reach,
and "{g/w}{g/w}: Target permanent becomes
white or green, or target land becomes a plains
or forest".