This card art is so disturbing, it got censored for the international release
However a few do have "practical" uses - here are some examples: The particular card you reference, Garruk the Slayer, was created for the Magic 2015 prerelease and is used in a variant where one player plays normally and the other plays as Garruk
The Pokemon Company has announced that a limited beta of "Pokemon Trading Card Game Live" will launch on iOS, macOS, and other platforms later in February ahead of an official debut
Example Saproling Burst has an ability that reads Remove a fade counter from Saproling Burst: Put a green Saproling creature token onto the battlefield
Flaaffy is known for its woolly body, which retains electricity, giving it both a distinctive appearance and a practical advantage in battles
It can also be used by inserting a test that will fail between investigations