Since all cards are revealed on the table, everyone knows who picks what cards and can strategize their own picks with that info in mind
There are a few key differences, like that split cards have the combined mana value and types of both halves, while MDFCs only have the properties of the front half when anywhere other than the stack or the battlefield
Honorable Mention #1 - Leyline Tyrant I wish this were legendary
N5 Altered Stock - This includes, but is not limited to characteristics on the card that appear to show some form of alteration such as paper restoration, crease/wrinkle pressing, scratch removal, or enhanced gloss
While Dimir doesn't have the tools to answer Agatha's Soul Cauldron or Proft's Eidetic Memory once they're on the battlefield, you can prevent them from ever getting there with cheap counterspells for them
I can exclude those by their type easily enough