Because these creatures will have 1/1 token copies of themselves, Zinnia will have more chances of triggering its first ability, buffing his power abundantly
Additionally, Lapras's Hail attack does ten damage to each of the opponent's benched Pokemon, setting up Greninja exs Torrential Slash for full power
Theres also a (deliberate?) departure from vastly overpowered spells or commanders for each deck like Teferi's Protection, Toxic Deluge, or Edgar Markov
Some other early examples are Bandai Namco's Super Robot Wars Scramble Gather, based on a game series, and Yu-Gi-Oh from the beloved Shonen Jump manga series
There are fewer cards than a typical expansion, but there are still a ton
If you're playing on a smaller screen, take a second to verify that the card you're about to play is the one you intended to play