Wailord, Ocean King

Islandwalk, trample, ward {4}

As an additional cost to cast this spell, sacrifice a creature with "Wailmer" in the name

Tidal Wave —When Wailord, Ocean King enters the battlefield, return all creatures to their owner' hands except for Krakens, Leviathans, Fish and Whales

Ruler of the Sea —{2}{u}: This card gets +X/+X permanently, where X is the number of cards with "Magikarp" in the name you control