"These are beams of sunlight trapped in glass. Come on, Rae, you can tell. You're not that addled, right?" he says, smirk fixed firmly in place, hopefully distracting her from that slight puffiness under his eyes.

"Lumos Solem: Light of the sun. These twenty will all last for... a little bit. A day or so, maybe? But those four," he says, and gestures to the ceiling, "should last a little bit longer, as they have a fuel source. I wish I could be more specific."