Magic: the Gathering
PROHIBITEDfor use. Be careful with this, so you don't get some silly punishment for using the inappropriate dice!
PROHIBITEDduring the draft and deck assembly part of Limited events. As each person pays attention to their assembly, controlling the proper use would be much more difficult and a logistical nightmare at major events, so only at this point Wizards maintained the impossibility of using electronics. For those who like to keep up with changes in the document itself, here is the link to the updated MTR. The changes, in this case, are in points 2.12 (electronic devices) and 3.9 (die rolling). Do you still have any questions? You can leave a comment here in the article, and I'll answer you! That's it, folks! See you next time!