Hamletback Goliath 
Creature — Giant Warrior
Whenever another creature enters, you may put X +1/+1 counters on this creature, where X is that creature's power.
Legality
standardNOT LEGALpioneerNOT LEGALmodernLEGALlegacyLEGALvintageLEGALcommanderLEGAL