Hevnoraak, the Returned

Threshold—As long as seven or more cards
are in your graveyard, Hevnoraak gets
+1/+1 and has flying and trample.
Dredge 3 (If you would draw a card, instead
you may put exactly four cards from the top of
your library into your graveyard. If you do,
return this card from your graveyard to your
hand. Otherwise, draw a card.)