Update
I just updated the excel calculation file, with much more data available. You guys can download it here. Only data in grey cells are required, the rest will calculate itself! 
New data including…
- Data about maximum level possible to reach with all available Treasures (up to Level 1,000!)
- Leftovers XP, to be even more efficient when upgrading the hoard.
- Hoard updating simulator calculation!! 9 customizable upgrade available, with all info about level reached/gold cost/leftover XP along the way.
With this, it’s possible now to precisely predict the cost for reaching Hoard level 1,000. It’s a bit tricky, as I only have 9 steps, but you can still note down and edit start-up hoard level/leftover XP and combining gold cost to get there.
The reason I don’t include more than 9 steps is… I don’t know how to do it efficiently. 
I didn’t use any fancy formulas, but simple ones with multiple steps, manually. You can see multiple needlessly complex formulas hiding everywhere on the file. So, 9 is the best I can do right now…
Hope this will be useful to someone, especially when the new Faction is available! 
