Ability
Suiko's Maw. If you win the combat and the defeated card is [[seal:human]], it is banished.
The myth
In some rivers of Japan nobody talks about the kappa: they talk about the suiko, which is more or less the same thing with a worse temper. Its body is covered in scales as hard as armour, and it never comes out to play or to beg for cucumbers. It waits at the bottom, grabs whoever steps into the water by the ankle, and drags them down. The current gives the drowned back days later, without a drop of blood and with the skin untouched. The villages on the bank made offerings to it every summer, and still, every summer, someone was missing.