Once you cross that hurdle, theres still the fact that great Cube decks tend to want to be able to generate quite a lot of mana, which leaves them with less thats desirable to shuffle away when you can reset your Brainstorm
It follows that you will be selling your cards to an active community
That popularity is, at least in part, due to the legendary Evolving Skies Umbreon VMAX, #215 out of 203, a Secret Rare more commonly referred to as "Moonbreon." Moonbreon isn't the only popular Umbreon card in existence, but it is one of the most highly sought after cards of the 2020s
The ability does not target which means we can steal permanents with hexproof and shroud
River's Rebuke : This card only affects a single player, but it returns all nonland permanents that player controls to their hand
Corners must be well rounded