Caption
An adult red dragon unleashes its fury, reducing a city to ruin
Adult red dragons are tyrants that claim vast domains and might command armies of followers or significant magical resources. Red dragons rarely pay attention to the nations and claims of smaller creatures, and they might consider entire cities part of their realm. Most red dragons are inattentive rulers, though, spending decades focused on their own comforts, hoards, or magical concerns within their lairs. But when their attention returns to their territories, if they find matters not to their liking, whole lands might burn.
Red Dragon Lairs
Red dragons make their lairs in smoldering, unapproachable places such as volcanic mountains, burning wastelands, and ruins they’ve stolen from other creatures.
The region containing an adult or ancient red dragon’s lair is warped by its presence, creating the following effects:
- Burning Heat. The area within 1 mile of the lair is an area of extreme heat. A burning creature or object takes an additional 1d4 Fire damage at the start of each of its turns.
- Smoldering Haze. The area within 1 mile of the lair is Lightly Obscured with clouds of ash. Whenever a creature other than the dragon or one of its allies finishes a Long Rest in that area, that creature must succeed on a DC 15 Constitution saving throw or have the Poisoned condition for 1 hour.
If the dragon dies or moves its lair elsewhere, these effects end immediately.

Red Dragons
Dragons of Greed and Devastation
Habitat: Hill, Mountain; Treasure: Any
Red dragons take whatever they desire and burn to ash anything that stands in their way. These chromatic dragons endlessly desire more—more magic, territory, treasure, or whatever else inflames their cruel ambitions.
Red dragons make their lairs amid perilous cliffs and volcanoes. Within, they amass and fiercely protect hoards of treasure, and many have perfect recall of the hoards’ contents and the locations of all they’ve collected. Should anything go missing, red dragons fly into rages. They don’t rest until their treasures are returned and the thieves have burned.
Red dragons believe themselves to be the greatest of all dragons and, by extension, the greatest of all creatures. To them, pillaging and conquering are their right—treasures can find no more honored place than in their hoards, and other creatures are privileged to serve them.
