# Brass Dragon ## Regional effects _Source: Monster Manual (2024)_ The area containing an adult or ancient brass dragon's lair is altered by its presence, creating the following effects: - **Mirages.** While in its lair, the dragon can cast [Major Image](3-Mechanics/CLI/spells/major-image-xphb.md), requiring no Material components and using the same spellcasting ability as its Spellcasting action. When casting the spell this way, the spell's range is 1 mile, and the dragon doesn't need to see the spot where the illusion appears. - **Refreshing Water.** Water within 1 mile of the lair is magically refreshing. A creature that drinks such water gains `2d4` [Temporary Hit Points](3-Mechanics/CLI/rules/variant-rules/temporary-hit-points-xphb.md), and the dragon is immediately aware of the creature's presence. If the dragon dies or moves its lair elsewhere, these effects end immediately.