"No. 997 Undead Dragon
We thought we had stumbled on an old pile of smoldering bones, until they began to smolder, then ignite! The burning bones reassembled themselves into a massive winged shape - a dragon!
It’s an undead dragon! Run!"

It seems that some daring adventurer managed to get close enough to get this sketch done. They were clever enough to approach this bone dragon from behind, where they were less likely to be detected.

This was a fun prompt, to have your character sketched as a bestiary entry in a journal!
October Patreonsketch & journal entry from @@ageaus

Original: https://www.patreon.com/posts/monster-bestiary-75439867