Trade them in for those t4cc crystals in store and hoard them. You never know when 6 star rank 5's come out and they require 50 t4cc of a class.
Got an Elsa?
Got an Elsa? Using em on Elsa is about as useful as letting them expire ngl. /s(Sorta)
Just don’t open the crystals they come from until your need to spend them. I regularly have 100+ T4cc crystals to open, but only open some of them when I’m ranking up and don’t have enough.It would be great if we could sell them, but until then, my current route seems the least wasteful.
I tend to get those trade-in crystals when my T4 CC hits overflow, I also hoard my T4 CC crystals like BG hoards everything soooooo yeah.