Its a tiny mistake that instantly makes it stand out
Since Magic was first developed by Richard Garfield, a 15-card booster was his vision, Rosewater said, years before designing for Draft was even a thing. With a chance to rethink that number, R&D settled on a play booster containing 14 cards because that number did the best job of giving us the play experience we wanted. The change from 15 to 14 playable cards in a booster impacted future set designs as well, as with one fewer common slot, R&D adapted by making less unusable commons, at least from a Limited perspective
Your ideal start is turn 1 Brigette, grabbing some combination of Pikachus/Lillipups/Ditto/tech Basics depending both on the matchup and what Pokmon you actually started
Were started off with a watered down Fire / Fighting deck that contains neither the famous base set Charizard nor any Machamp
The final ability is the tricky one that at first glance seems really naff however actually works out to be powerful and versatile
Jumpstart also includes flavourful reprints like Fiery Confluence and Descendant's Path