Relic accessory upgrades!

[Mirage]

I think it would be cool if we were able to upgrade the relic accessories as well, now that we can upgrade the other relic gear to things worth using at level 90+.

What do you all think?

[hiko]

- trial: trade 10 of each forgotten item=> relic acc+2 (skip the +1).
- no augment trial, directly storable on slip