Prompt

a sleek, magical weasel with fur that shifts between dark blacks and twilight grays. His eyes are large, sparkly, and filled with curiosity. Around his neck is a collar that softly hums and seems to be made of shadowy material. As Umbrus moves, you can picture small, arcane runes appearing and disappearing along his body, leaving a magical trace in the air. His paw pads are almost see-through, leaving delicate patterns behind as he explores the enchanted world.