Arthur is an incredibly powerful card that allows you to earn lore with your weak questers like Lilo, Making a Wish and Pinnochio, Star Attraction, then bounce them back to your hand to keep them safe from challenges - while also rewarding you with two lore for doing it
But I have found that theres enough bias towards staying within these broad categories that its worth keeping in mind as you draft
Theres been a lot of markers for transitions regarding this game over the years: damage on the stack, the new frame, Arena, COVID, etc
If you don't control five or more Towns at that time, the ability won't resolve and none of its effects will happen
That said, if someone can figure out how to make it work, it could be very effective at ending games early
One of these is Dark Confidant, which, thanks to this set, is re-entering Standard for the first time in close to two decades