WIthout looking them up, I’m willing to wager that these cards had free attacks. This was a “mechanic” introduced in the 4th gen sets. They are not error cards.
cool this was something i was unaware of, it was just odd as there is a small mark where what looks like a single water energy should be however there is no actual symbol there.
It looks like this will be the case though as the reverse english and the Japanese versions have this as well.
I have never really understood the mechanics of the actual game, i just like collecting.