A perfectionist teacher... when it came to something like magic, Nico could understand easily why caution and perfection would be needed. It was so easy for magic to go awry and Nico knew that from firsthand experience. So he didn't blame Draco for wanting as much information as possible because there was no knowing if it was even possible to make what Nico needed and safely, at that.

Not responding right away, Nico chewed his lower lip as he considered his answer. In truth, he hadn't spent a lot of time around the unicorns; they didn't like him much given his tie to death. But his half-sister had been familiar with them, often working with them, which came easily for her given her propensity towards horses. With this in mind, Nico looks up at Draco. "Usually only the pure of heart can get near them. Their horns and hooves are made of precious metals, and, well... They didn't seem to like me much."