Disclaimer: I do not own these characters.

Warning: Spoilers for the end of Supernatural season 6 and beginning of season 7.

Loki cries out as fire races through him. They were swimming beneath his skin, in his veins, and together they ate.

They were consuming his magic.

In hindsight it had been a terrible idea using magic to force the dark beings out of Castiel. Loki should have considered the chance of transferring them into his self by accident. He should have waited for the hunters to open the gate to Purgatory. He should have waited for Gabriel to return.

Now he is battling them alone.

He would've screamed or clawed at his skin if he wasn't frozen in place. He would've ripped them out with his bare hands if he had control of his own limbs. Instead he is unmoving, using all concentration to block them out. He feels them flow in tremendous waves as they move against one another biting and tearing. Their movement begins to slow and together they became still. As one the creatures turned to eye the part of him they can't reach through his barriers.

"L…O…K…I…"

His magic wavered as a voice strokes the walls keeping his mind and soul intact.

"Loki…"

He shook when others began to join.

"…Loki…"

"LOKI"

"…want…"

"Let us…"

"HUNGRY…"

"…so… hungry…"

"…YESss…"

The volume increases as more came forward to chip away at what little will he had left. They speak over one another, voices crashing and grinding, fighting to gain his attention. It's so tempting to allow them in...

"Loki." He hears a whisper through the snarling and muttering. "Loki, listen."

"NO!" The sinister voices rise, hissing in anger.

"Ours…"

"…too late…"

"TAKEN"

"Nonononono…"

"Don't let go."

The monsters began to wrench and jerk, struggling desperately to break down his walls. Loki gathers what little magic is left within reach to shove them away. They shriek as they split apart within him. Their voices became impossibly loud as they snap against his power.

"WE WILL DEVOUR. WE ARE MANY. I AM LEVIATHAN."

Loki returns to consciousness gasping for air. His eyes sting and his throat burns as he coughs up a foul, black liquid. The things inside him are withering away, screeching in agony but they continue to fight back. He panicks when their thorned bodies began to clog his lungs and squeeze his organs. He doesn't hesitate to reach for them pulling with all his strength until long bodies covered in scales emerge from his mouth.

Bobby and Dean only stare in horror at the wriggling mass beside the god. Seeing the snake-like forms with gaping razor lined mouths leave them speechless. These things are currently inside Castiel. These things are fighting to take control of the angel. Footsteps diverted their attention to reveal an injured Gabriel limping towards them.

"Seems your discussion with Crowley ended terribly," Loki grins, dark blood dripping down his chin, "and you are late."

The archangel smirk, crouching next to him, "Look who's talking? Anyway you aren't supposed to be here," he paused to frown, "and you almost gave up."

Loki waves him away, "But I didn't. Besides, did you really expect me to stand by and let you enjoy all the excitement?"

Arguing with his other helps ease the terror still bubbling inside of him. His near death experience is forgotten now that he knows he is safe and Loki would've continued to irritate the shorter trickster but Bobby is chanting. The symbols written in blood burn brightly in the dim room and the wall caves under the weight of the spell.

"I'm sorry, Dean."

The liesmith's heart twists when he hears Castiel apologize. He knows what it's like to fall into maddening power and deal with the painful guilt that follows. Except he can't focus on his past right now, not when his friends need him to focus. They need to make sure Leviathan is returned to their rightful place lest they consume the worlds.

Howling winds erupt as Purgatory began to open its shadowed door. Everyone covers their eyes as brilliant white and gold light erupt from Castiel's chest funneling into the dark vortex.

Gabriel stands abruptly, "It's not working."

Loki didn't have time to question him because the archangel is already on the move. The air grows thicker as Gabriel unleashes his Grace and uses it to bury his hands into the younger angel. Through the clashing power and blinding brightness Loki sees them. He sees the long serpent bodies twisting around Gabriel's grasp, fangs digging deeper inside Castiel refusing to let go of their host. Loki's eyes widened and his breath seizes when the creatures turn to latch onto the newcomer.

The archangel turns to Loki, eyes hollow and grim, "Guess it's my turn to let go."

"No."

Fear spreads quickly when his other extends long wings to take flight towards the opening. Loki scrambles to his feet, pushing the two hunters aside when they try to stop him. He casts his spells to pull his friend back but it's too late. The gateway closes before the trickster god can reach him in time and the wall reappears again.

"NO!"

Edited: 10-30-2013