Li Lung (Earth Dragon)

Innate Spellcasting. The dragon’s spellcasting ability is Charisma (spell save DC 16, +8 to hit with spell attacks). It can innately cast the following spells, requiring no material components:

• At will: detect thoughts, divination, invisibility, plane shift (Any Spirit Realm/Ningen-Do only)
• 3/day each: move earth, stone shape, wall of stone, polymorph (self only, humanoid form only)
• 1/day each: earthquake

Earth Glide. The dragon can burrow through nonmagical, unworked earth and stone. While doing so, the dragon doesn’t disturb the material it moves through.

Earth King’s Blessing. The dragon is never harmed by an earthquake, whether its origin is natural or magical. If an earthquake collapses a cavern around it, it is merely inconvenienced by having to dig its way out—it suffers no damage from the falling stone.

Keen Senses. The dragon has advantage on Wisdom (Perception) checks.

Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.

Multiattack. The dragon can use its Roar. It then makes three attacks: one with its bite and two with its claws.

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

Claw. Melee Weapon Attack: +11 to hit, reach 5 ft., one target. Hit: 13 (2d6 + 6) slashing damage.

Tail. Melee Weapon Attack: +11 to hit, reach 15 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage.

Roar (2/Day). The dragon emits a thunderous roar. Each time it roars before finishing a long rest, the roar is louder and the effect is different, as detailed below. Each creature within 500 feet of the dragon and able to hear the roar must make a saving throw.

• First Roar. Each creature that fails a DC 16 Wisdom saving throw is frightened for 1 minute. A frightened creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success..
• Second Roar. Each creature that fails a DC 16 Wisdom saving throw is deafened and frightened for 1 minute. A frightened creature is paralyzed and can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. This deafness is so deep that spell casters must make a DC 16 Constitution saving throw or miscast and waste any spell that has a verbal component.

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.

• Claw Attack. The dragon makes one claw attack.
• Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 10 feet of the dragon must succeed on a DC 19 Dexterity saving throw or take 13 (2d6 + 6) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
• Cast a Spell (Costs 3 Actions). The dragon casts a spell from its list of spells, consuming a use of  a spell as normal.

Both the adult and the ancient Chiang Lung have access to the same lair actions and regional effects

(NB. These are placeholders only!, still need to work on these).

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:

• The dragon chooses a point on the ground that it can see within 120 feet of it. Stone spikes sprout from the ground in a 20-foot radius centered on that point. The effect is otherwise identical to the spike growth spell and lasts until the dragon uses this lair action again or until the dragon dies.
• The dragon chooses a 10-foot-square area on the ground that it can see within 120 feet of it. The ground in that area turns into 3-foot-deep mud. Each creature on the ground in that area when the mud appears must succeed on a DC 15 Dexterity saving throw or sink into the mud and become restrained. A creature can take an action to attempt a DC 15 Strength check, freeing itself or another creature within its reach and ending the restrained condition on a success. Moving 1 foot in the mud costs 2 feet of movement. On initiative count 20 on the next round, the mud hardens, and the Strength DC to work free increases to 20.

Regional Effects

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

• Magic carvings of the dragon’s smiling visage can be seen worked into stone terrain and objects within 6 miles of the dragon’s lair.
• Tiny beasts such as rodents and birds that are normally unable to speak gain the magical ability to speak and understand Draconic while within 1 mile of the dragon’s lair. These creatures speak well of the dragon, but can’t divulge its whereabouts.
• Intelligent creatures within 1 mile of the dragon’s lair are prone to fits of giggling. Even serious matters suddenly seem amusing.

If the dragon dies, the magic carvings fade over the course of 1d10 days. The other effects end immediately.