I was able to complete the temple in 2 cities, no event box needed. I do every event and this one had a great amount of gold in incidents. Could be my luck but friends have told me the same. I used a spreadsheet found on youtube, it made a big difference, was able to enter values and see which path was better for me. I was able to do 7 cities, 250 tasks - 4 upgrades, 3 chests open all 6 - 3 upgrades, the other 3 from the questline. I liked this approach better bcs I was able to have the cities on 8+ hr wait times towards the end of the cities, so less time doing tasks, 400 with event box, 475 if no event box, say a new player or one that didnt do last event, just my preference, nothing wrong with doing 400 or more tasks. No need for diamonds, just some time. I like the event box, I think it is one of the best things added to the game. I could have just stopped when I had enough with the event box. Now, I dont know if it was asked here in the forum or my guild, an unused event box, what happens if you dont used it. Is it set to this event only? Does it disappear? I will find out, I intend to save it for the next event. My guess, it is specific to this event. spring is right around the corner