Mother Goo

Mother Goo enters the battlefield with X +1/+1 counters on it.
{t}, Remove X +1/+1 counters from Mother
Goo: Create a token copy of Mother Goo with
X +1/+1 counters on it.
{x}, {t}: Put X +1/+1 counters on Mother Goo.

Once, we were explorers. We have evolved.