Goliath, Mass Manipulator

Legendary Creature — Human Scientist Hero — {1}{G}

Reach (This creature can block creatures with flying.) Power-up — {4}{G}: Put two +1/+1 counters on Goliath. Then draw a card for each creature you control with power 4 or greater. (Activate each power-up ability only once. Reduce the cost by his mana cost if he entered this turn.)