Chris Groff there were lots of fiddly rulings on BGG to try break loops, but I find it simpler to just not have those cards in the game, so players don’t have to be aware of rules that aren’t on the cards in play.
Frankly, Nagato was just asking for trouble. Any time you have a “one action becomes two actions” mechanic, you’ll be chasing down loop edge cases forever.
Zavodnick is mostly just annoying. I believe it actually came out in one of my early games, and I was just “never again.”