Lisa found that she had herself some decent clients who were promising rare materials. It wasn't the imagination that limited Lisa in her creations. She found that she was being limited by the materials she could see with.
"You'll have the best darkness elemental gathering runes I can make. And you will have the best fire elemental gathering runes I can make!" Lisa made these promises easily. Everything she made was to the best of her abilities.
"I know you only know the elven runes, but once they research the mage tower origin runes, I will share copies." Walker wanted to ensure that as many people would see the research results as possible. Especially Lisa since he knew that She would be teaching them to herself as soon as she saw them.