It doesn't require zero effort though you have to win to get the good stuff to get to rank 5 because the random drops I think cap at 310 (I haven't seen one higher feel free to correct me) whereas the package which you can only get one per character drops the better stuff which again is once a month opposed to weekly.
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No, it actually requires zero effort. Yes, itll go quicker if you participate, but really, finding a quiet corner and crouching through each round is nearly as effective. Unlike the raid where you must participate...