The mana value of a modal double-faced card is based on the characteristics of the face that's being considered
Impostor Syndrome There was a time when big splashy enchantments like this were exactly what Commander was all about, but the formats a lot more streamlined these days for something like Impostor Syndrome to really take off
Dimir has often struggled with identities outside of Mill and Reanimator, and Runo offers a welcome twist on the average UB deck, with a flavorful quest to bring a Lovecraftian horror into play
The final card can steal anything
If you dont, you may put a land card from your hand onto the battlefield. If you can plot a card, cast something from your graveyard, from exile, from someone elses hand or directly from your deck, you can put something of your choice into play from your hand
Think creatures with delve like Hooting Mandrills, or evoke creatures like Spitebellows