Whispering Snow Berries

Comes into play with 3 Berry counters on it. A
land with a Berry counter on it produces 1 less
mana than its ability or effect allows. If the land
can produce multiple colors of mana at once, the
land's owner can choose which mana to reduce.
{g}: move a Berry counter from Whispering Snow Berries to target land.
{b}{g}: put a Berry counter on Whispering Snow Berries