Brown Greatwyrm

Brown dragons dwell in deserts, digging vast domains under the shifting sands. A brown dragon’s lair is an arid cave, grotto, or ruin where the dragon can dessicate and consume their victims. The lair is littered with the acid-pitted bones of previous victims and the fox-gnawed carcasses of fresh kills, watched over by crumbling statues. Centipedes, scorpions, and snakes infest the lair, which is eerily foreboding and would almost smell sterile if not for the stench of meat allowed to rot in the heat.

Lair Actions

On initiative count 20 (losing initiative ties), the dragon takes a lair action to cause one of the following effects; the dragon can’t use the same effect two rounds in a row:

• Great columns of sand that the dragon can see within 120 feet of it powerfully shift outward. Any creature on the ground within 20 feet of such a column must succeed on a DC 15 Strength saving throw or be pulled up to 20 feet into the vortex and knocked prone.
• A mass of swarming scorpions fills a 30-foot-radius circle centered on a point the dragon chooses within 120 feet of it. The swarm spreads around corners and remains until the dragon dismisses it as an action, uses this lair action again, or dies. Any creature in the circle when it appears must make on a DC 15 Constitution saving throw, taking 10 (3d6) poison damage on a failed save, or half as much damage on a successful one. A creature that ends its turn in the cloud takes 10 (3d6) poison damage.
• Magical darkness spreads from a point the dragon chooses within 60 feet of it, filling a 15-foot-radius sphere until the dragon dismisses it as an action, uses this lair action again, or dies. The darkness spreads around corners. A creature with darkvision can’t see through this darkness, and nonmagical light can’t illuminate it. If any of the effect’s area overlaps with an area of light created by a spell of 2nd level or lower, the spell that created the light is dispelled.

Regional Effects

The region containing a legendary brown dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:

• The land within 6 miles of the lair takes twice as long as normal to traverse, since the sands are coarse and slippery, and ground that seems firm often hides holes or predators.
• Water sources within 1 mile of the lair are supernaturally dried up, and any spell that creates water except those cast by the dragon fail.
• Swirling sandstorms lightly obscure the land within 6 miles of the lair.

If the dragon dies, the sands remain as they were, but other effects fade over 1d10 days.