Kiora, Sea Summoner

Flash, hexproof
This spell cannot be countered.
When Kiora, Sea Summoner enters the battlefield, you may search your library for a Kraken, Leviathan, Octopus, or Serpent spell, reveal it, put it into your hand then shuffle.
Kraken, Leviathan, Octopus and Serpent spells you cast cost {1} less to cast.