Originally Posted by kabosu

Rainbow coins are pretty useless
I just added all my dupes and if I got rainbow coins from when I first started playing which was over a year ago I'd have about 22 rainbow coins
If it was 100 coins I could understand that even if 50 dupes is still a lot

I'm guessing there is going to be daily deals/special gacha which give rainbow coins but 300 is way too high to care for

According to the shop... each rainbow only required 6 coins to buy... not sure what you are talking about here.