We wanted to have at least one battle that had an Equipment on the back, and New Capenna felt like a good fit for this
She usually won't have the correct Energy cards available to attack, which will give you many chances to attack without having to worry about getting damaged too much
This enables you to attack with Miraidon ex, Iron Hands ex, and Pikachu ex to get earlier knockouts and secure your Prize cards.
You see, Dragonlord Dromoka not only cant be countered, which is cool, but also makes it so that your opponents cant cast spells during your turn
Ignoring all of Snapdaxs mutate shenanigans, its one of the best rates as a 3/5 double striker for 4 mana
Also, in Wilds of Eldraine Collector Boosters, confetti foil versions of these anime borderless cards can be found