Titan of the Tide

Whenever Titan of the Tide attacks, flood target land. (Put a flood counter on it. It's an Island for as long as it has a flood counter on it.)
At the beginning of your upkeep, you may pay {1}{u}. If you do, search your library for a creature card with islandwalk, reveal it and put it into your hand. Then shuffle your library.
"Release the kraken!" - Zeus to Poseidon