That was no illusion. Pharmacists had to use magic while creating medicine, the more famous the pharmacist, the higher grade spells they could use. That was why Lizzie, the best pharmacist of Re-Lantier, was stronger than Verita.
"This potion... did you bring this here... the legendary potion? No, could it be... the Blood of God? Hey, what potion is this?"
"Eh?"
Verita stared wide eyed with her mouth open. That was what I wanted to ask, she thought.
"Impossible... for a potion like this to exist. Where did you get it from? Some ruins?"
"Eh? Erm, no, that is...