Hush, Genius

Hush enters the battlefield with a
mind counter on 0. Every upkeep,
move the mind counter one numeral
increasing. At the beggining of your upkeep,
gain control of any number of creatures
with total power equal to or below the
numeral the mind counter is currently on.
Hush then gets a 1 +1/+1 counter for every
creature you control.