Wait! I still need your help. I promised Ilya some magic mix solutions.
The main ingredient is a Frozen Crystal Sphere, secreted by Naughty Jelly Rabbits. Can you collect some for me and give them to Yuri?
I'll reward your efforts, of course.
You can find Naughty Jelly Rabbits near the road to the Ilya outpost in the north. Have a safe trip!