Kiora, Sovereign of the Deep
Legendary Creature — Merfolk Noble
4 / 5
Vigilance, ward
Whenever you cast a Kraken, Leviathan, Octopus, or Serpent 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.
If the spell has in its mana cost, you must choose 0 as the value of X when casting it without paying its mana cost.