# 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](3-Mechanics/CLI/rules/variant-rules/long-rest-xphb.md) in that area, it must succeed on a DC 15 Constitution saving throw or have the [Poisoned](3-Mechanics/CLI/rules/conditions.md#Poisoned) condition for 1 hour. If the dragon dies or moves its lair elsewhere, these effects end immediately.