Thread:Vizhre/@comment-25765835-20150202035654/@comment-6477627-20150202070630

That's my reasoning, too. I still remember only managing one non-event SR during the Santa Oracle event despite 198 kills.

I suspect NUBEE gives low drop-rate to cards that are not likely to find multiple slots in a deck. Otherwise, people will quit the event once they get the HUR.