I tend to throw rare candy towards Palkia / Dialga for Roar of Time or Spacial Rend, but otherwise I tend to save it for a rainy day…
When it comes to XL I am most tempted to put it into my Keldeo (Best non-mega fighting type / Mythical ) , or Zygarde…
Eternatus is not worth it due to the inflated costs…
Zarude seems like it would be a good contender?
For now I have been holding off doing anything that is raidable for XLs (did put some basic rare candy into Zacian as I got 2 good ones after using candy maxing out another
by Due-Candy-8929