If your doing card reveals try to combo it with a r-gatcha or peromin (its the same points tier as 3 rgatcha). Thats how i managed to get the current sr. I never had any luck with single R-gatcha (probably have done over 200). Also i would save all puddings for elite guard/Colosseum events as they can get you more stuff.

If we're lucky they will allow us to buy card reveals again with the n-gatcha bundle.