I did it! In 60 minutes I beat Legendary in the challenge and still had time to complete the emblem quest!
I had never gone for speed before, much less on legendary, so I actually impressed myself. It will definitely not be my norm. It was fun to see that I could, but that’s it. Too bad my summons were , still no pirates heroes.
That should almost be a challenge like the emblem quest ones. Time challenge through, no replays! . Too much honor system involved for me on that.
A more serious proposal would be the vanilla event challenge. A lot of new players struggle and most the top teams and advice on the forum is use hard to get heroes. It can be done without them. I “cheat” and rely on Gretel a lot, but could figure something out. Sounds fun IMO.