My friend had these cards with "errors" on them. They all had a HUGE amount of HP and most of the errors are like impossible. Like instead of does, it is dwes.
The cards are fake. I once bought a deck from a flea market (already a bad idea) saying it was a BW deck but it did not have one unova and have impossible ammounts of HP (such as magikarp with 200 hp instead of 20) so they are fake. (it also did not come with any energy cards proving my point)