Esseji, Waking Death

While Esseji, Waking Death is in your graveyard
your maximum hand size is 0, you can play cards
from your graveyard, and other cards entering
your graveyard are instead exiled.
When you cast Esseji, Waking Death from your
graveyard you may sacrifice up to seven creatures.
Draw cards equal to teh number of creatures
sacrificed this way.