Green Dragon

Regional Effects

Source: Monster Manual (2024)

The region containing an adult or ancient green dragon’s lair is warped by its presence, creating the following effects:

• Beast Spies. Tiny Beasts magically gain the ability to understand Draconic and can communicate telepathically with the dragon while within 1 mile of the lair.
• Poisonous Thicket. Ordinary plants growing within 1 mile of the lair poison the air around them. Whenever a creature other than the dragon or its allies finishes a Long Rest in that area, it 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.