Board Thread:Question and Answer/@comment-2.239.249.190-20150615175023/@comment-25751901-20150619130118

I suggest you keep it for higher level. Intermediate has 5 treasure. So, I guess advance might have 7 treasure. :)

Just forget about LE in area 4-5. It is never worth your vit to get a key from it. WG ending reward is more worth farming for keys.