Rix, Bottom Feeder

Kraken, Leviathan, Octopus, or Serpent cards in your hand have Lurk. (You may cast this card face down as a 1/1 Fish creature for {2}. Whenever a player casts their second spell each turn, put a lurk counter on this creature. Then, if it has lurk counters greater than or equal to its mana value, you may turn it face up. As it turns face up, remove all lurk counters from it. Whenever a creature you control is turned face up, draw a card.