"I can definitely relate to that," Kell replies with a knowing smile.

As it wasn't obvious already, he's a bit of a show off. He likes to wow people with his magic. Both, because he prefers this reaction to fear, and because he wants to share his genuine love for magic. Back home, the most common reaction he got was fear, so he's latching on any opportunity to get something different.

He nods along the explanation. It is as he expected. There are similarities he cannot ignore. Black London used its magic too freely, relied on it too heavily, until it took over to the detriment of them all. He doesn't think it's the same with dark magic of Claude's description. Something must have happened though. The purging of all existing knowledge sounds very familiar. Same thing happened with Antari magic in Red London.

"I could tell a similar story about magic I specialize in. Though I have mine through having been born with this, no rituals needed." Kell points to his black eye. He rarely call attention to it willingly, but Claude revealed something potentially dangerous about his own magic, so it's only fair to respond in kind.