When I first read the card effect on Puzzle of Time, I didn’t think it was that good. However, now I know that Puzzle of Time is one of the strongest cards, and could potentially end up bringing the same kind of Pokemon TCG anarchy that Lysandre’s Trump Card did just nine months ago.
Combined with Sableye DEX, Puzzle of Time can allow unlimited recycling of cards, such as Crushing Hammer and Hypnotoxic Laser, much like LTC did in the past. Seismitoad EX decks can now use multiple copies of DCE, Hammers and Lasers as well, bringing back much of the benefit it had from LTC.
However, my real concern about Puzzle of Time is that it will narrow the format down to just a few decks, which is a very unhealthy meta.
Some people say that Sableye should be banned, instead of Puzzle of Time. However, I believe this is not the case. Sableye/Garbodor is a perfectly healthy deck, but without Puzzle of Time it is not an overpowered deck, like with Seismitoad EX and LTC. I believe that banning Puzzle of Time, not Sableye, is the way forward towards a healthier meta.
I hope you take my opinion into account,