Fangs of Kalonia (MH3-153) - Modern Horizons 3

Put a +1/+1 counter on target creature you control, then double the number of +1/+1 counters on each creature that had a +1/+1 counter put on it this way.
Overload {4} (You may cast this spell for its overload cost. If you do, change "target" in its text to "each.")