Michael Aesop, Hell's Tyrant

This creature enters the battlefield with {x} +1/+1 counters on it.
If {x} is at least 4, this creature gains haste.
If {x} is at least 7, this creature gains trample
and hexproof.
If {x} is at least 10, this creature gains "{t}: Deal damage equal to this creature's
power to each untapped creature."