Beckoner of the Sea Gods

If you control a Leviathan, Kraken, Octopus, or Serpent creature, Beaconer of the Sea Gods has hexproof.
{t}: Add an amount of {u} equal to your devotion
to blue. Spend this mana only to cast a
Leviathan, Kraken, Octopus, or Serpent spell.
"Is that all your god's power? Let me show you mine."