Its classic and good in a multitude of formats, and I think its perfectly balanced
Double-Sided Cards Flip cards were the predecessors of double-faced cards (DFCs), and either modal DFCs or transforming DFCs
Theres of course the original 151 Pokmon getting the treatment with some all-new art directions
One thing to note is that the leaked cards from the A4 set only show no-damage baby cards
Then he had some packs to open and then I noticed like, Hey these are actually different cards. So then I found I was like, Oh, Im going to start a set.' Now, Tiffany has been collecting her favorite Pokmon 151 cards for years
This effect is what made Firewall Dragon so broken in the first place, as this guy wasnt always restricted to Cyberse monsters, nor was it once per turn