Board Thread:Question and Answer/@comment-31266538-20170607172807/@comment-30650229-20170607182352

I suppose you can create a team, made up of cards that consume many soldiers (like Redeye) and go to the last area of each event (where 15 vitality per step are consumed) and let them kill you, then recruit the soldiers back.

Also if you want to waste resources, you can exchange them in the Market: the number will be less and less.

But the best way is to build an alliance hall or be a part of an alliance, because it requires too many resources. And better is an alliance hall dedicated to a single element and not balanced, this way you will gain more experience from collecting the resources to which your alliance is dedicated.