Greeneyes, Deepwood Prowler

This spell can't be countered.
Whenever Greeneyes and one or more other creatures
you control attack, you may move any number of
+1/+1 counters from Greeneyes onto other attacking
creatures.
At the beginning of your end step, if the number of
basic Forests you control is greater than Greeneyes's
power, put a number of +1/+1 counters on it equal to
the difference.