Misty, Water Pokemon Master

Vigilance, ward {3}
Whenever you cast a Octopus, Jellyfish,
Crab or Shark spell from your hand,
look at the top X cards of your library, where
X is that spell's mana value. You may cast a
spell with mana value less than X from among
them without paying its mana cost. Put the
rest on the bottom of your library in a random
order.