One thing that normal tabletop trading card games cannot do that Pokemon Pocket can is create an epic way to award you for pulling some of the rarest cards. That comes in the form of immersive cards.

The best Pokemon TCG Pocket ex Starter deck is probably the Dark-type Paldean Clodsire ex deck, at least at time of writing, but in reality the answer is a lot more complicated than that. There are nine ex Starter decks in PTCGP that players can pick between once they complete the associated challenge missions,