Adult Emerald Dragon

+5

If the dragon fails a saving throw, it can choose to succeed instead.

3/DAY

The dragon can cast hallucinatory terrain, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 17).

1/DAY

The dragon can burrow through solid rock at half its burrowing speed and can leave a 15-foot-diameter tunnel in its wake.

The dragon makes one Bite attack and two Claw attacks.

Melee Weapon Attack: +11 to hit, reach 10 ft., one target. Hit: 17 (2d10 + 6) piercing damage plus 7 (2d6) psychic damage.

Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 10 (1d8 + 6) slashing damage.

The dragon exhales a wave of psychic dissonance in a 60-foot cone. Each creature in that area must make a DC 18 Intelligence saving throw. On a failed save, the creature takes 42 (12d6) psychic damage, and until the end of its next turn, when the creature makes an attack roll or an ability check, it must roll a d6 and reduce the total by the number rolled. On a successful save, the creature takes half as much damage with no additional effects.

D5

The dragon casts one of the following spells, requiring no spell components and using Intelligence as the spellcasting ability (spell save DC 17):

• At will: mage hand (the hand is invisible), minor illusion
• 1/day each: detect thoughts, dispel magic, invisibility, major image

The dragon magically transforms into any creature that is Medium or Small, while retaining its game statistics (other than its size). This transformation ends if the dragon is reduced to 0 hit points or uses a bonus action to end it.

The dragon magically teleports to an unoccupied space it can see within 60 feet of it.

The dragon can take 3 legendary actions, choosing from the options below. Only one legendary action option can be used at a time and only at the end of another creature's turn. The dragon regains spent legendary actions at the start of its turn.

3/TURN

The dragon makes one claw attack.

The dragon uses Psychic Step or Spellcasting.

The dragon creates a dancing mote of green flame around a creature it can see within 60 feet of it. The target must succeed on a DC 17 Dexterity saving throw or take 31 (9d6) fire damage.

Emerald dragons dwell in enormous caverns, lava tubes, and tunnel networks deep within the earth. They favor warm spaces, particularly in volcanic regions. Over time, their psychic presence seeps into the land surrounding their lairs, expanding their awareness and subconsciously luring their favorite food—giant lizards—to settle and thrive in the region. Emerald dragons use the features of their lairs to confuse and imperil intruders. They dig additional tunnels that allow them to move through their lairs in multiple ways and set traps leading to yawning chasms or pools and flows of lava. Emerald dragons take great pains to hide the chambers that house their hoards and collected lore, often using illusion magic and subtle construction around the natural features of their lairs to conceal their central hoard chambers from mundane and magical sight. The challenge rating of a legendary emerald dragon increases by 1 when it's encountered in its lair.

On initiative count 20 (losing initiative ties), the dragon can take one of the following lair actions; the dragon can't take the same lair action two rounds in a row:

• Beguiling Whisper: The dragon telepathically whispers to one creature within range of the dragon's telepathy. The creature must succeed on a DC 15 Wisdom saving throw or be charmed by the dragon until initiative count 20 on the next round. A creature charmed in this way obeys to the best of its ability any command the dragon issues that isn't directly harmful to the creature.

• Distort Perceptions: The dragon attempts to alter the perceptions of one creature it can see within its lair. That creature must succeed on a DC 15 Intelligence saving throw or take 22 (4d10) psychic damage and have disadvantage on saving throws until the start of its next turn.

• Vanish: The dragon becomes invisible until initiative count 20 on the next round.

The region surrounding a legendary emerald dragon's lair is altered by the dragon's magic, creating one or more of the following effects:

• Crystal Profusion: Natural stone within 6 miles of the lair grows plentiful crystal formations and veins of emerald gemstones.

• Fiery Sight: Fire and lava within 6 miles of the lair become conduits for the dragon's psionic presence. As an action, the dragon can cast the clairvoyance spell, requiring no spell components and targeting any area of fire or lava in that region.

• Subtle Obstruction: Rocks within 6 miles of the dragon's lair sometimes move of their own accord, usually when no one is watching. Often the rocks obstruct the approach to the emerald dragon's lair, with boulders moving to block narrow defiles, way-markers tumbling off the path, or smaller stones shifting beneath travelers' feet to send them tumbling down slopes or into rivers.

• Thriving Wildlife: Giant lizards are attracted to the area within 6 miles of the lair and settle there in large numbers.

If the dragon dies, the population of giant lizards near the lair returns to normal levels over the course of 1d10 days. Rocks immediately stop moving of their own accord. The existing abundance of crystals and emeralds remains, but new ones form at a normal rate.

Emerald dragons make their lairs in caves and subterranean ruins, favoring locations that have been abandoned—and ideally forgotten—by other creatures. They are most comfortable in extreme heat, so they frequently choose lair sites in the sides of volcanoes or near geothermal vents. An emerald dragon's lair is a maze of twisting tunnels, interconnected caverns, or crumbling ruins designed to disorient intruders. Circuitous routes within the lair provide the dragon with numerous ways to evade pursuit, while strategically designed choke points allow them to harry enemies with repeated ambushes. Emerald dragons frequently lay traps and alarms at the entrance points to their lairs, with older (and more paranoid) dragons employing several layers of such defenses.

Emerald dragons are unusual among gem dragons in their preference for coinage over gemstones when amassing treasure. They are fascinated by the various designs of coinage and often strive to collect rare mintages. Most emerald dragons can precisely enumerate the names, amounts, and denominations of every bit of currency in their hoards. Emerald dragons also prize cultural artifacts, especially relics with historical significance . They place great importance on an item's provenance, which can make it difficult to gauge how they might value any particular object. Despite remaining unmoved by the loss of a gold scepter deemed to be a replica, an emerald dragon might become enraged at the theft of a clay mug known to have been used by a legendary dwarf warlord while on campaign.

Emerald Dragon Art Objects: