Phyrexian Huntmaster

Trample, Infect
Whenever another creature enters the battlefield, put a +1/+1 counter equal to that creature's toughness on Phyrexian Huntmaster.
At the beginning of combat on your turn, you may move any number of +1/+1 counters from target creature to another target creature or creatures.
Phyrexian Huntmaster's power is equal to the number of creatures you control.