First off, great game. My wife and I love playing.
However , we were wondering about the timing of the end of a challenge trigger for power cards and abilities.
When is the end of a challenge? Is it a specific time or a range of time from when the winner of the challenge is declared and the next challenge begins?
The last page of the rule book has a numbered sequence for a challenge. So I was wondering the community could use those numbers as a basis for the correct answer.
I think it depends. If it is a reward for winning or losing the challenge, I would enact it in step 4:
"Any Creature abilities or Power cards that trigger from winning or losing the challenge may be used."
Otherwise, I would enact it sometime during steps 9-11. I'm not sure the rulebook states it precisely, so I'd have to use common sense to determine if it happens, say, before or after monsters are refreshed. If in doubt, I would lean towards doing it after.
If you are a "rules as written" sort of person, I would just do "after the challenge" effects after step 11 (unless they are win/lose awards, which are explicitly in step 4), but I suspect that there would be some odd examples that feel like they should be before that.
In other words, I don't think the rulebook is precise enough to solidly answer the question, but others might disagree.