Serpent of Yawning Depths

Krakens, Leviathans, Octopuses, and Serpents
you control can't be blocked except by Krakens,
Leviathans, Octopuses, and Serpents.
"Milotic live at the bottom of large lakes. When
this Pokemon’s body glows a vivid pink, it releases
a pulsing wave of energy that brings soothing calm
to restless spirits."