A crest of horns sweeps back from the head of this dragon, leading to a long neck and serpentine brass body.
5e SRD
Desert dragons that compete with blue dragons for territory, with a sometimes good but occasionally greedy nature
The blue dragons of the desert must contend with their deadly rivals, the brass dragons, who love the same arid caves. The brass dragons are not the vicious killers that the blue dragons are, although their good nature is sometimes overcome with doses of greed and self-interest.
Brass dragons sometimes (30%) are known to speak, only sometimes (30%) cast magic, but oftentimes will (50%) be found asleep. If the dragon is asleep, there is a 1 in 6 chance that it will awaken in the presence of adventurers. Dragons also sometimes feign sleep.
OSRIC