User blog comment:Rafe Adler/"The Thing" Discussion/@comment-176.221.122.115-20180406125535/@comment-208.108.119.71-20180406140402

How can a demon even use an archangel's grace? or the grace of any angel? Wouldn't it be toxic?

When Cas stole some other angel's grace, didn't it cause him problems in Season 9? Metatron said that it would fade and Cas would burn out. Wouldn't the effects be that much more dangerous for demons, even a Prince of Hell?

And I agree...why not take it all at once, then? Unless he's doing what Lucifer is to Anael? Or is he simply addicted?