Fortunately, Wizards of the Coast has been messing around with lighter versions of subgames - Enter the Dungeon forces you to play a subgame under the table
How much would the price of Blue Ugin drop
The Lost Caverns of Ixalan has four new Commander precons with classic Ixalan archetypes, and this one features merfolk one of the oldest and proudest archetypes in all of Magic
Yeva, Natures Herald Yeva changes how you play mono-green entirely
Perhaps bring them back as one unique card this time ala Gisa and Geralf or Halana and Alena, Partners
If Im being honest, Id have to rank it as the second most-egregious card with actual Eminence (third if we count Oloro), but it feels better due to the noble goal of trying to make big, dumb beaters viable in the format