So far the new 24 man..

[ElHeggunte]

Question you may know the answer to. If you get a card or roll are you disallowed from lotting on it on future runs if you used it? They do this for minions all the time, and scrolls occasionally, and when the Void Arc dropped only one card you couldn't lot on it if you had it. Did they do the same here?

I haven't received a card yet so I don't know, though I would assume no. You can certainly keep rolling on the music scrolls even after obtaining and using it.