However, the fact that I just used the words "back face" to describe them (and so did the rules) kind of demonstrates how confusing this distinction can be
It does make it more likely that people looking just to collect sealed will probably be less likely to buy this latest wave
No reprints, useful effects, and brilliant, chiaroscuro artwork from Roger Raupp all combine to make this card one of the top chase rares from Visions in particular and the Mirage block more generally (its the seventh-most valuable card across Mirage, Visions, and Weatherlight)
It's harder to find other homes for it though, but Artifact decks like Daretti, Scrap Savant are heavily reliant on mana rocks that produce colorless mana so Monument is great there too
Buy enough balloons and it turns into a ride
The top Commander cards listed here are by no means an exhaustive list, as many hundreds of cards show up across deck archetypes and playstyles in a 100-card singleton format, but these are by far some of the most popular choices from Commander's 15+ year history