I'm also not sure, cause it seems that most boss drops are items you can potentially get from box aswell!
Shouldn't be too long until someone gets enough boss cards to see full drop list. It would be useful to have people specify if something is from box or not though.
@frozenrain looks like 53.5 totem average from those, I'm at 48 average in my past 7 runs. So I guess it's around 50 totems/run from the boss? I'm only 3/12 for 6k nx though, while you're 13/17, so that seems kind of high variance. Also wtf where's your chaos scrolls? Stop pulling 5m bees