"Let me give you an example. Some people's dreams have ordinary creatures in them. You know that, right?"
Vanessa nodded vigorously. She knew that all too well.
She had [Spirit Vision]. Back when the Communion was still called the Canteen, she had to visit different believers' dreams every day to help find supernatural materials.
She had seen countless believers' dreams. Having creatures in them was perfectly normal.
Elsa, for example, had a garden for her dream, with little squirrels and such inside.
Victoria nodded. "Some Formless Arts can be paid for with animal flesh and blood. So what would happen if you used a Formless Art in a dream and caught an animal from that dream to pay the price?"
That question was a little beyond Vanessa. She usually only paid with fingers and had never actually seen an art like that.
Before she could guess, Victoria answered her own question. "The Formless Art will automatically fail, and the caster will lose control."
"Huh?"
Vanessa froze.
It was that serious?
If something like this was so serious, why hadn't she heard of it? Surely this should have been common knowledge in the supernatural world?
No, thinking about it carefully, she seemed to have heard Dorothea mention it, but what she had said was, "Don't use Formless Arts or make sacrifices in dreams."
Vanessa nodded in realization. "So using Formless Arts in dreams carries that kind of risk."
"That's right. Great Beings don't accept sacrifice offerings from dreams. Sacrificing to Them in a dream will also automatically fail, and the person making the sacrifice will lose control too."
Victoria paused, as though recalling something, then shook her head before continuing her explanation:
"Some scholars once believed that the essence of losing control was a shift toward dreams, but academia never accepted