There was nothing that could kill a nephilim, that much they already knew. Both he and Sam had done the research prior to Jack being born on the chance that they needed the information. Nephilims were a step above the angels hence why the angel blades didn't work on them. The only other possible weapon was the archangel blade but that could only be used by another archangel.
For a moment Dean wondered if his time as a vessel would be enough to consider him an archangel, just enough for him to be able to use the blade, before he decided probably not.
They were never that lucky.
So that means that they had to think of something else that would work on the nephilim.
Most of all, he needed time. Time to regroup and figure out what can be used and what he could get. Time that he didn't have as the nephilim kept jumping around the world as he wished. There was no way to track him down properly, no way to tie him down or depower him that he knew of.
Except...for one thing.
Dean stared down at the Ma'lak box, hearing Mary coming into the bunker and calling his name hesitantly, her voice echoing through the halls. She had texted him a few times, almost warning him that she was coming back to the bunker and that she wanted to talk to him. He didn't answer her texts before or her call now, just continued to stare down at the box that he had once planned to use on himself.
A box that no archangel could escape from.
Or rather...no nephilim could escape from.
But he wouldn't be able to do it alone, the nephilim would never come to him if he called, and rightfully so. Even with a tentative plan slowly forming in his head he couldn't be one hundred percent certain that the moment he saw the nephilim that he would be able to hold himself back from attacking it.
So that meant...he had to use someone else. Someone that the nephilim, if not trusted, then at least would listen to enough that it would come when called.
He couldn't bring himself to even think about working with Castiel, not after the fact that the angel had kept secrets from them, again, and as a result Sam had to pay the ultimate price.
Again.
But...if it was someone else that he knew and was familiar with, someone else that he trusted enough to come when he was called.
Then maybe...it would work.
He wasn't sure how, but eventually Mary found him, leaning against some boxes and staring at the Ma'lak box.
"Dean." she said softly, tentatively coming into the room, stepping in like she was trying to approach a wild animal. She moved like she wanted to hug him but then thought better of it, staying a few feet away from him. "Dean, you know that I love you. And I love Sam. You're my sons, of course I love both of you."
Dean didn't make a sound, just sipping at his drink that he held in his hand, relishing the burn that it spread through him. It was practically the only thing that he could really feel anymore.
"I just...I don't think that the answer is immediately to kill Jack. Sam wouldn't have wanted it." Mary said. She stopped speaking when Dean jerked at the sound of his name, swallowing hard. "Dean."
"You're right about not killing him, it's cause we can't." Dean injected, the cold tone of his voice stopping Mary from saying anything else. "So. I got a new idea. And if you give a single damn, you'll be in on it and helping me."
He heard her take a deep breath and then let it out. "What are you planning to do?" she asked.
Dean motioned with his chin at the Ma'lak box. "We're going to stuff him in there until I find a way to kill him." he said, finally looking her in the eyes. "And you're going to be the one to summon him."
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