Once per turn, during either player's turn (Quick Effect): You can change this card from Attack Position to Defense Position
Past sets certainly had chase cards go for more in the early days of the release
Actually, its not the only one, because the deck needed other tools as well, but this in conjunction with Card not found, Card not found and Card not found was a pretty good base for a deck
These include the likes of the nostalgic Computer Search, the ever useful VS Seeker, and a swathe of other cards to shape your deck
Every base set Machamp has a 1st Edition stamp
If you ever wanted to get extremely silly and set stuff up on the road or whatever, this mod makes that possible