It's only been like a million years but I have added a chapter to the witch!Cas and familiar!Dean story that I started for Suptober. You can read it here on ao3.

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It's only been like a million years but I have added a chapter to the witch!Cas and familiar!Dean story that I started for Suptober. You can read it here on ao3.
A Long Time Coming
nc
Author: @karategirl80
Artist: @ncdover1285
Summary:
One day when Dean comes to pick Sam up from school, Sam shows him something he didn't think would happen--Sam can call blue flame-one of the first indications of being a mage. Dean had figured with his non magical father, and his lack of magical ability, that neither of the boys had picked up any of their long dead mother's skills. Follow Sam and Dean as they discover the heritage they've been denied and make their way in their new world.
Tags: Debriel, Sastiel, John Winchester’s A+ Parenting, Witch!Sam, Witch!Gabe, Familiar!Dean, Familiar!Cas, Ace Dean Winchester
Link to Fic
Link to Art
@acespnminibang
For @spnovember 2021
Day 13- Emerald Orbs
Title: Endless Pools
Author: raidensrealm
Art piece by: @alexiescherryslurpy
Rating: Explicit
Pairing: Sam/Dean
Word count: 1,469
@witchsambingo squares: Tattoo Magic, Druid
@j3bingo square: Exhibitionism
Major Archive Warnings: None Apply
Summary: While enjoying the morning after Imbolc, Sam's familiar cuddles up to him at the falls with intent to chase away the morning's chill. Sam seizes the opportunity Dean offers amidst nature's beauty.
Based on this glorious Witch!Sam art piece by @alexiescherryslurpy (full piece in the fic on A03)
Tagging @outofnowhere82 @samanddeaninpanties @alwaysthrowsscissors @jackandthesoulmates @samsbighonkintiddies @eyesofatragedy67 @agenthellcat
An Archive of Our Own, a project of the Organization for Transformative Works
Happy Halloween!!!
Witch Castiel loves to fly on his broom late at night, sadly his cat familiar Dean doesn't share the sentiment.
Where I live we don't celebrate Halloween, but If you celebrate it, I hope you have a funny and spooky day.
Here Kitty, Kitty
AO3 link here
SPN Fluff Bingo Round 4 (@spnfluffbingo)
Chapters: 1/2
Words: 2632
Relationships: Dean Winchester/Sam Winchester
Rating: Mature
Warnings: No warnings apply
Square Filled: Animal Transformation
Summary: After a witch turns Dean into a familiar, he and Sam discover that it isn't so bad . . .
“Dean!”
I swore as my brother’s angry shouts from upstairs cut off with a pained cry and chopped even more urgently at the thrashing vines trying to either entangle me or block my way out of the solarium. We’d split up upon breaking into the witch’s house to search for her and her missing victims, with me taking the ground floor and Dean the upper level. The yelling had started a few minutes ago, but by then I was already caught up in dealing with a very large, very ornery Little Shop of Horrors homage.
I eventually hacked my way free and raced up the back stairs, exchanging my Bowie knife for the pistol loaded with witch-killing bullets along the way. As I reached the top, my brother’s invective and sounds of pain turned into an inhuman scream, and I staggered as something hit me. Suddenly I could feel his rage and shock, and the psychic powers that had been dormant for years began to stir.
I shook my head to try to clear it and ran for the second door down the hall, from which I could hear chanting and snarling. The first thing I saw when I burst into the room was the large ritual circle painted on the floor near the center, in which crouched an infuriated mountain lion, yowling and lashing its tail. The witch, Madeline Andrews, was off to one side, standing behind an altar and reciting from a thick grimoire.
Read more on AO3
Sacred Bonds
by noxsoulmate
A Destiel soulmate story with witches and familiars
Link: https://archiveofourown.org/works/26758498
Ship: Castiel/Dean Winchester
Rating: mature
Summary: Every witch has a familiar – their closest companion, their soulmate. In some cases their lover. A witch without a familiar is incomplete and won’t ever reach their true potential. No wonder a big part of a young witch's college education is dedicated to finding that one person who completes them. With so much energy put in, matches are usually made within the first six months.
But Castiel has always been an exception. To everything.
Clumsy and prone to accidental fires, not only has Cas hardly any control over his powers after two years at college, he hasn’t found the one to ground him. With year three about to start, Cas isn’t looking forward to repeating the embarrassment that comes with ‘speed dating’ potential familiars.
Especially not when he comes back from his soul-searching retreat to the latest rumors: normally, those of the most potent blood – the children of soulmate-bonds – stay amongst themselves, too powerful to connect with a regular witch or familiar. But apparently, the eldest son of the long line of Winchester soulmates – Dean Winchester himself – was joining them this year...
Fourth fic for the wonderful @ficfacers$ auction 🥰
@spnaubingo square filled: I1 ~ College AU
To Summon A Familiar
Castiel stood in the middle of the summoning circle. He was shaking with nervousness as he looked at the people standing around him outside of the circle. It was Cas’ eighteenth birthday and he was finally going to be able to summon his Familiar to him.
A Familiar was a guide and companion to witches. They helped to keep a witch’s magic balanced and from becoming uncontrollable. When a witch was born, their Familiar was as well. The two souls weren’t able to bond with each other until their eighteenth birthday when the witch’s magic would fully manifest and the Familiar would discover their animal form.
Castiel’s hands were shaking uncontrollably as he fought to contain his magic. His power was beyond anything the elders had ever witnessed. Cas’ magic was so strong, it had become tangible in the past few days. His magic could be seen as bright blue sparks that hovered around his body like a cloud.
Destiel, witch/familiar AU? Dean's the familiar!! For @doggolovingace
This cannot be happening right now, Dean thinks to himself as the police officer grabs him around the collar. How the hell did he get himself into this mess?
His nose rises and Dean’s suddenly hit with an all consuming scent. One that means his witch is nearby. Fuck. And right now he can’t even chase the scent down because he’s too busy being manhandled in his familiar form.
“Excuse me,” a deep voice calls out, stopping the police officer. When Dean looks up, his eyes are met with deep blue ones staring down at him. Dean’s belly fills with butterflies and joy because this is it, this is him, his witch. Excitement floods his senses as he watches the man explain how this ‘German sheperd’ is his pet.
The man pulls him around a corner. Away from prying eyes, Dean shifts. “Thanks for, ya know.” Dean gestures.
“Easier than paying to get you out of the pound,” the man says before smiling. “I’m Cas.”
When their hands meet, Dean feels a connection snap into place and he smiles. “Nice to meet you, Cas. I’m Dean, your familiar.”