I hope to post this in the right section.
I just opened a pack with 5 commons. I also took a screenshot as proof but I can’t find a way to upload it here.
This just happened to me as well. Also got screenshot. Tried to open ticket but the web form glitches
If one of the supposed commons was “Rally!”, then it is a visual bug, because “Rally!” is a rare actually.
Source: https://twitter.com/Celestalon/status/1352320211945361420