Is Black Lotus banned?

Could you please clarify whether or not Black Lotus has been banned? There seems to be some confusion in the community about its status, and I'm curious to know if there's been any official ruling on the matter. If it has been banned, could you provide some details on the reasons behind the decision and any potential implications for those who hold or trade Black Lotus? On the other hand, if it's still allowed, could you explain any measures in place to ensure its continued legality and safety for users?