Ooooh, I love OCs!! Especially those related to Kaldheim and Littjara! Excited to see what you make 👀

Unfortunately I can't give you too much in the way of canon information. This is her bio in the Legends of Kaldheim article:

Moritte is an enigma. A shapeshifter from Littjara, she was born a Gladewalker. While many grown-up shapeshifters leave Littjara to explore the realms, Moritte wanted more knowledge. To reach that end, she took the form of a young Covewalker. Living among the Covewalkers, Moritte absorbed all their knowledge and secrets before vanishing into the mists. She now wanders the realms, the most knowledgeable shapeshifter of all, seeking the solutions to new unanswered questions.

It's vague, I expect delibrately so, but that's a little frustrating when you want actual details. I wrote a more in-depth post about expanding Littjara and changeling lore a while back, which might help if you're looking for headcanon inspiration.

As to the "knowledge" Moritte seeks, I'm inclined to believe it is cosmological, since that's a major part of Kaldheim's functioning--the way realms are formed, what happens to them when they break off the tree (they become planes!), and how Cosmos monsters are born. As a creature especially attuned to aether and the Cosmos, Moritte learning more about Kaldheim cosmology would also mean deepening her knowledge about herself.

Perhaps her quest for all-encompassing knowledge leads her to a revelation about the Multiverse even before the Phyrexian invasion forces everyone to be very, very aware of it. It might even entangle her with forces far beyond her comprehension. Namely, the Eldrazi. After all, what are Eldrazi but much larger Cosmos monsters? Wouldn't she want to find out?

After March of the Machine, I am almost positive that Moritte has left Kaldheim, traveling to learn the lore of other planes. (I know it very likely does not work like this but it would also be funny if all changelings were now planeswalkers, because of how Kaldheim cosmology works.) Some fun places for her to be: Arcavios for its repository of knowledge in Strixhaven, Kamigawa for its overlap of mortal and spirit realms, Zendikar for its history of entanglement with the Eldrazi titans.

made them up on the spot, name is Rom (subject to change)

also whenever they’re at work they try flirting with swatch. it never works

((lmk if i need to add more detail))

5 - mr clement bunnies

4 - these jacob hashimoto studies i did at an art museum

3 - the guy in this gerard donelan comic

2 - i cant fucking find it, but the guy that manages to paint windows and such unbelievably warm and bright and gorgeous and the rest of the painting is dull and cold

1 - these star shapes i draw on fucking everything

0 - this guy

I'm not a furry! To my understanding, furries identify with an animal, with their fursona representing them while not being them.

This is Something Different :)