Smuggler's Copter is the most dominant card (by percentage of decks that play it), and while it's featured in both of the big decks, it's also propping up a bunch of second-tier decks like Mardu / RW Vehicles and Bx Zombies, so getting rid of the looter scooter might actually make the format less diverse, as odd as that sounds
Together, they form one of the most exciting sets for both seasoned collectors and new fans
The unique creature from the deck, Imaryll, Elfhame Elite is a great way to sneak your damage through with that massive Elven army
Quantum Riddler sees play in a range of formats, normally by riffing on the scam pattern established by evoke creatures: You can warp it then flicker it to draw two cards and keep the large body
It is an easy inclusion in any aristocrats deck, most notably any witchs familiar deck, allowing you to sacrifice a ton of creatures to provide you with an army of 2/2 zombies, with the goal to kill your opponent
It looks like a cheerleader but I doubt it'll bring you cheers when you face it in Ranked and your Mega Mawile ex or Mega Altaria ex is doing nada