Korsaiya, The Rising Tide

Flash, Ward {1}
•Tidal Influence: At the beginning of your upkeep, and when a Kraken, Leviathan, Octopus, and Serpent deals combat damage to an opponent, create a Flood Token. (Flood tokens are colorless artifacts with "{t}: add {u} or {b} to your mana pool," and "Sacrifice this token: You get a Tide Counter.)
•Whelming Tide: {t}{b}{g}{u}{4}: Return all creatures opponents control to their owners hands that aren't Krakens, Leviathans, Octopus, and Serpents. This can only be activated i