2 questions: i) how did you come by 'threads of light' phrase? Such a nice phrase - have to start using it in some prompts (AND your whole wonderful prompt)!! ii) whose patronus was deer? Was it Snape's?
a fantasy magical insanely detailed illustration depicting a young beautiful wizard student in the potterverse school uniform creating with her wand a huge exquisite ethereal ghostly bioluminiscent muscular deer warrior made entirely of threrads of light patronus in front of her, hyperdetailed matte ...