Here you have my answer: Thoughts on the design
Ages 13+ JOIN THE FOLLOWSHIP: Immerse yourself in Middle-earth with thematic game mechanics and gorgeous card art, battling alongside your favorite The Lord of the Rings characters LEARN TO PLAY MAGIC WITH A FRIEND: Use the included how-to-play guide or the interactive online tutorial in Magic: The Gathering Arena, a digital platform available on desktop or mobile, and enjoy 2-player battles TWO READY-TO-PLAY 60-CARD DECKS: This Starter Kit comes with 2 beautifully illustrated premade decks, including 1 foil Mythic Rare card and 4 Rare cards in each one, and 2 deck boxes for easy storage FIGHT FOR THE FATE OF MIDDLE-EARTH: Choose the Black-Red deck to join Sauron and the hordes of Mordor or fight for the Free Peoples of Middle-earth with the Green-White deck #2
I will argue, though, that what really killed the hype for Set Champs was the fact that the prize card, Mirabel, Family Gatherer, was and still is completely unplayable
For starters, the front side of Kefka is a totally fine Commander by itself
But do you see the problem