Eragon finds himself lost in a different world to the one he knows will he be able to find his way home and end his fight.

Lily Potter had a secret James never knew. She was an Abhorsen, born to set the dead to rest. She takes her son past the Veil along with Sirius in an attempt to keep them safe. Sabriel and Hadrian must now deal with Dumbledore's plots after Kerrigor.

Some themes taken from the old Kingdom Series by Garth Nix, but not a strict crossover. When Greece uncovers something unexpected, few nations realised that this and the apparent appearance of a bunch of 'unkillable zombies' are connected.

It is a time of fragile peace in the Dark World. Soon, strange and horrifying things begin to happen, and only one person has the power to stop them...

a woman of royal falcon and abhorsen blood was long ago found locked away in the shm'Ecl halls for her mixed breed. Her falcon heritage gives her the powerful magic, something that could break most of mixed blood, but it could be the charter that save her

Erik - a boy who finds a magic ring - is thrust into a magical battle in Mär Heaven, and through the portal to the Old Kingdom - a battle in which he may be the only hope.

My own version of the aftermath of s5 verrrrrrrrrrrrrry slight x-over with Abhorsen series, mainly just names and a few key ideas

Azari, a young sith necromancer distressed by the decaying state of Korriban, turns to a monster for help. Old Kingdom - Star Wars crossover.

Kel is forced to leave after her year, and is taken in by a mysterious fighting group in the forests of Tortall. When she comes out and is the only one who can stop the oncoming battle, what will the palace people do with her? AbhorsenTP Xover

Some unfortunate students make the mistake of summoning Mogget.

The Abhorsen Setsuna tracks a Greater Dead back to Death.

Oneshot crossover between Harry Potter and Garth Nix's Abhorsen Trilogy. Post Abhorsen.