Kumo, Spider Reborn

Deathtouch, reach, haste
At the beginning of each end step, mill X cards,
where X is the number of cards that left your
graveyard this turn. If X is 5 or more, draw a
card and put a +1/+1 counter on Kumo.
Escape—{2}{b}{g}, Exile four other cards from
your graveyard. (You may cast this card from your
graveyard for its escape cost.)