This is very good. ATK and HP swapping have been done before, but they always have involved an element of being very powerful, if not overpowered. Note that while some may take this as just another OP HP/ATK switch, the majority have not seen the older versions, if at all. Some people may have qualms about targeting an opponent's creature. Those people need to think that even if they had a 30/30 creature, or whatever, they're still getting a 4 atk creature. Also, you can just kill the Vice Versa.
Just some notes the card curator will pick up on.
Make the title "Vice Versa | Vice Versa" with a space before and after the divider.
Hide the previous version in spoilers.