User blog comment:EmpyreanSmoke/Supernatural Q&A/@comment-3045936-20150729055227

Three questions if that's possible.

1. Can iron seal magic in any user, like witches, demons, fairies, ghost, some monsters etc? I ask this as because of two points, it doesn't seem like the brother bother to use it against other magical entities or beings like gods/pagans or Angels or that it negates their powers. Second point was in season 8 Crowley used a form of the Goblet of Blood spell while in demon cuffs and in a devil's trap. And in season 10 Rowena was trying to use some kind of divination when talking to Charlie. Plus was able to cast the Mark removal spell while still in iron chains. So does iron only block magic to a degree where some witches like Olivite are left powerless and some like Rownena are left only weak?

2. Was Heaven created before or after the Leviathans? I ask this specifically as some biblical sense talk about Michael slaying one in the waters during the creation of the Earth if I remember right.

3. Could when Soul Powered Castiel aka Godstiel in season 7, could he have been able to kill Michael and Lucifer? I ask this cause, simply he goes from threatening to destroy/shut down Hell itself to wanting to keep them in the cage.

These are the only ones I can think.