User blog comment:EmpyreanSmoke/Supernatural Q&A (Closed)/@comment-27014555-20151114222607/@comment-26982641-20151117171411

Td5, I agree with Empyrean, more then one person can hold the Mark and you have to destroy all of the copied Marks in order to set the Darkness free. About Lucifer, he completely removed the Mark from himself obviously.