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Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
what the hell
ok so I've tried it several time and once it worked, I have no idea why it's working sometimes and sometimes it isn't (for the random phase)
if anyone has an idea I really would like to know