Pact Beneath the Depths

When Pact Beneath the Depths enters the battlefield, you may search your library for a Kraken, Leviathan, Octopus, or Serpent creature card, reveal it, and put it into your hand. Shuffle your library afterwards.
Kraken, Leviathan, Octopus, and Serpent creature cards you cast cost {2} less to cast.
"I went too deep, and the deep came back with me."
- Pyke