Slinn Voda, the Rising Deep

Mana cost: {6}{U}{U}

Legendary Creature — Leviathan

Kicker {1}{U} (You may pay an additional {1}{U} as you cast this spell.) When Slinn Voda enters, if it was kicked, return all creatures to their owners' hands except for Merfolk, Krakens, Leviathans, Octopuses, and Serpents.