Envy, Devourer of Souls

Trample.
When Envy, Devourer of Souls enters the battlefield, exile all creatures from all graveyards.
Envy, Devourer of Souls gains X +1/+1
counters, where X is the amount of creatures
exiled this way.
When Envy, Devourer of Souls is destroyed,
create a 0/1 black Envy, True Form Token.