Panzurli’eel, Writhing Deep

Whenever a creature that is not a Serpent,
Octopus, Kraken, Leviathan or Crab is declared
attacking you, draw a card.
Islandwalk, shroud.
You may return Panzurli'eel, Writhing Deep from
your graveyard to your hand by exiling the top of
your library until you exile cards with mana value
13 or more.