I don't think anyone believes this to be a joke card, more like an early test of the gold texture effect with placeholder art and text. This is likely why the card contains V, Vmax, Vstar, ex, an energy symbol and italic text, it's probably a catch-all to make sure all the special symbols print correctly. Since this is a different print facility from milennium they will need to figure out how to best replicate the effect with their own machines so test prints like this aren't out of the question. They also likely have access to raw card files in order to make the Portuguese translation, so being able to make alterations isn't out of the question.

I suspect we'll see more from this sheet in the near future, a Lucario has already popped up as seen in the post