Supernatural One Shots

Castiel

This takes place after Road Trip (9x10) except Sam and Dean don't split up therefore Dean never gets the Mark of Cain. Castiel's stolen grace allows him to use some powers full angels have such as dream disruption and others.
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Dean's heart began to race as he and Sam entered the abandoned building just outside of Lincoln, Nebraska, where he had received word that Castiel was way in over his head with angel battles. He had awoken from a dream earlier where Castiel visited him and warned him about certain angels who were narrowing in on his location but before Dean could ask more about what was going on, Cas had vanished from his vision and a few moments later his voiced echoed a location in his head along with the words They've found me before there was nothing. Rushing out of bed after the sullen dream and taking off with Sam to Lincoln, the two hunters had found themselves in the aftermath of a full on angel battle royale that reminded Dean of the warehouse where he had found Cas... well, his vessel Jimmy, abandoned and unaware of where the angel had disappeared to.

"Cas?" Dean called out into the rubble and broken ramshackle, his darkening green eyes full of worry as they scanned all over the area for any signs of the trenchcoated angel.

Sam shined a flashlight onto the bodies of a woman in a dark blue suit and two suited men with multiple stab wounds to the chest, all bodies covered in blood, laying lifeless from what looked like a fresh battle. "Angels?" Sam asked furrowing his brow as he shown the flashlight up at Dean who was looking at the bodies as well with a brooding sense of fear. A fear, Sam figured, they were going to find Castiel in the same state. Sam knew it was too dark for Dean to see the look of sympathy on his face, but he couldn't help it when he saw Dean turn away and shine his flashlight on another section as he called out for the angel.

"Cas!" Dean yelled louder and he stepped over rubble. "Castiel!" He reached a spot where the moonlight shined through a broken window and finally saw a hint of tan fabric under a large piece of what looked like ceiling or a wall. "Sammy, over here!" Sam rushed over and helped Dean move aside the cement piece that was over the fabric he had discovered. A horrible sense of dread filled the both of them as they hoped it was just the coat by itself. They moved it aside and laid eyes on the area, horrified.

"No, dammit no," Dean whispered, shaking his head as his eyes fell onto a mangled form, barely recognizable as human. The amount of blood was almost as sickening as the churning feeling Dean felt in the pit of his stomach. "Goddammit Cas, no..." the older hunter muttered, his voice cracking at no. "You can't be dead, you stupid son of a bitch, you just can't!" Dean ground out angrily.

"Dean," Sam interrupted quietly, placing his hand on his brother's shoulder as he was crouched down over the bloodied mass meshed into the torn suit and trenchcoat below.

Dean felt a tear slip down his cheek as he looked anywhere but to the remains of his best friend. A powerful feeling of remorse and regret swept through him as he envisioned Cas' face from his dream just hours earlier. If only he had gotten there sooner. If only...

"There's nothing we could've done," Sam broke in suddenly, as Dean couldn't even form an angry retort to how wrong Sam was, because he could've driven faster, he could've done so many things different, but he was too focused on the sudden realization that Cas is dead to even bother with Sam's words. He slowly picked himself up from where he was crouched and a darkened expression overtook his face.

"When I find the sons of bitches who did this, I swear to God, Sammy, they're gonna wish they died in the fall because what I'll do to them'll be worse," he growled as his breaths came out raggedly and unstable with emotion. "Those bastards'll wish they never-" Dean stopped mid sentence with wide eyes and dropped his flashlight, mouth slightly open.