It seems weird, having to describe the dragonspell to a dragon, but there are differences between their worlds and honestly? Kili would rather know all of Crucible's apparently limitless abilities so he knows he's not being ensnared in some mind-control thing.

He can't help but be wary.

"It's a bit like, um..." Kili rubs the back of his head. "Glaurung? He could sort of...enchant people with his eyes. Make them do things."

Honestly he hadn't expected any less just from looking at Crucible's scales. But the 'breath weapon' thing has him a bit confused. "What do you mean, breath weapons?"