Davriel, Soul Broker

The −2 is the loudest ability on the card, and it is also the one that could never have existed on paper. "Accept one of Davriel's offers, then accept one of Davriel's conditions" is a digital-only mechanic: the game hands you a menu of upside effects, then makes you pay for it by choosing among downsides, all resolved on a client that can generate the choices on the fly. No stack-based, hand-shuffled version of Magic could adjudicate a modal-then-drawback ability that dips into a shared pool of options the way this one does, which is why the card lives where it does and not in a normal booster. Strip that away and the rest of Davriel is a coherent black control walker: the +1 taxes attacks against you or your other planeswalkers with a discard-or-sacrifice clause that protects loyalty without needing a fog, and the −3 shrinks a threat by -3/-3 perpetually, another effect anchored to the digital toolbox since "perpetually" is not a paper keyword. That perpetual modifier is the tell for how these designs think: the shrink follows the creature until the game ends rather than resetting at cleanup, so it can permanently downsize a mana dork into uselessness or leave a bomb small enough for a later removal spell to finish. It is a planeswalker built to demonstrate what the format's engineers can do when the rules text no longer has to fit on cardboard.