Uncontrolled Growth

{g}: Put a +1/+1 counter on target creature you
control.
{g}: Put two +1/+1 counters on target creature an opponent controls.
{b}: Destroy target creature with power or
toughness 10 or greater that has at least 1 +1/+1 counter on it.
As a matter of fact, there IS such a thing as being too
large.