After reading your post, I'm glad I didn't leave Druantia too soon - as I was very close to do last week.

Caelum seems really hard to complete, so I guess I'll focus first on gathering enough DRUBBLE to complete Brighthollow, then I'll come back to Druantia to farm again, and lastly I'll go to Caelum.

Btw, as I'm still in Druantia, if you need screenshots of Druantia's keys, let me know which ones do you need and I'll drop some screens.

!PIMP