Crowded Depths

If {u} was spent to cast Crowded Depths, return
up to X target creatures to their owner's hand, where X is the number of Krakens, Leviathans, Octopuses, and/or Serpents you control.
If {b} was spent to cast Crowded Depths, target player discards cards equal to the number of Krakens, Leviathans, Octopuses, and/or Serpents you control.