Like every other part of Magic, the story of designing planeswalkers is really a story of periodically breaking the rules
For starters, they both combo with Demonic Consultation and Tainted Pact to win the game instantly
They are still designed in such a way that Card not found is not strictly better than any of them, though
Modern Magic revolves around enters-the-battlefield abilities, so it makes sense that doubling those triggers is worth your time, even if the set-up cost is pretty high to get this 4-mana do-nothing rolling
What was the process for the artist to submit work, to get to work on these cards
Wernog, Rider's Chaplain + Academy Manufactor + Deadeye Navigator Wernog, Rider's Chaplain is a 2-CMC creature that allows opponents to investigate (create a Clue Token) or lose 1 life if they don't, which triggers every time Wernog enters or leaves the field