I had to look Bruce Coville up… his name was familiar, and for good reason. I still have Jeremy Thatcher, Dragon Hatcher and the My Teacher series packed up and waiting for me to have kids.
I’d never heard “glory” before, though I can’t argue with that one either. It fits as much as “blessing”, and it’s not uncommon for animal groups to have more than one name. “Blessing” is listed on Wikipedia though… and we all know that’s the definitive source of reputable information 😉 (I kid… it’s often helpful, but not perfect)
“Debt” is good for dragons… I can see “horde” being used too. (Doesn’t quite roll off your tongue the same way, but does stick to the silliness of naming schemes… Crash of Rhinos and all :lol:)