Amphibious. The dragon can breathe air and water.
Legendary Resistance (3/Day). If the dragon fails a saving throw, it can choose to succeed instead.
Crystalline Paralysis. Creatures who fail their dexterity saving throws on breath attacks are stunned for one round.
Multiattack. The dragon can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.
Bite. Melee Weapon Attack: +15 to hit, reach 15 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 9 (2d8) acid damage.
Claw. Melee Weapon Attack: +15 to hit, reach 10 ft., one target. Hit: 15 (2d6 + 8) slashing damage.
Tail. Melee Weapon Attack: +15 to hit, reach 20 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.
Frightful Presence. Each creature of the dragon's choice that is within 120 feet of the dragon and aware of it must succeed on a DC 19 Wisdom saving throw or become frightened for 1 minute. A creature can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success. If a creature's saving throw is successful or the effect ends for it, the creature is immune to the dragon's Frightful Presence for the next 24 hours.
Crystalizing Breath (Recharge 5–6). The dragon exhales a magic fog in a 90-foot line that is 10 feet wide. Each creature in that line must make a DC 22 Dexterity saving throw, taking 67 (15d8) "crystalline" damage on a failed save, or half as much damage on a successful one.
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.
Detect. The dragon makes a Wisdom (Perception) check.
Tail Attack. The dragon makes a tail attack.
Wing Attack (Costs 2 Actions). The dragon beats its wings. Each creature within 15 feet of the dragon must succeed on a DC 23 Dexterity saving throw or take 15 (2d6 + 8) bludgeoning damage and be knocked prone. The dragon can then fly up to half its flying speed.
Description
A bismuth dragon is an odd variant of the crystalline dragon. They spend most of its time lurking in caves, or anywhere they can find copious amounts of natural sulfur, as that is the largest portion of their diet. They enjoys crystals and other fascinating metals they can find. They are very solitary creatures, and try to avoid contact with all other intelligent creatures. They rarely leave their lairs, unless absolutely necessary. If you enter their lair or try to take any items out of their hoard, the dragon will immediately become hostile towards you.
Lair and Lair Actions
Bismuth dragons dwell in caves, in the deep ocean and abandoned underground ruins. A bismuth dragon’s lair rests where any naturally occurring sulfur can be found, and where its victims can crystalize in pools. The lair is covered in crystals of all shapes and sizes.
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:
- Crystalline obelisks that the dragon can see within 120 feet of it jut outward in a piercing manner. Any creature on the ground within 20 feet of such a crystal must succeed on a DC 15 Dexterity saving throw or be impaled and grappled.
- A cloud of sulfur fills a 20-foot-radius sphere centered on a point the dragon chooses within 120 feet of it. The cloud spreads around corners and remains until the dragon dismisses it as an action, uses this lair action again, or dies. The cloud is lightly obscured. Any creature in the cloud when it appears must make on a DC 15 Constitution saving throw, taking 10 (3d10) poison damage on a failed save, or half as much damage on a successful one. A creature that ends its turn in the cloud takes 10 (3d10) poison damage.
- Magical darkness spreads from a point the dragon chooses within 60 feet of it, filling a 15-foot-radius sphere until the dragon dismisses it as an action, uses this lair action again, or dies. The darkness spreads around corners. A creature with darkvision can’t see through this darkness, and nonmagical light can’t illuminate it. If any of the effect’s area overlaps with an area of light created by a spell of 2nd level or lower, the spell that created the light is dispelled.
Regional Effects
The region containing a legendary black dragon’s lair is warped by the dragon’s magic, which creates one or more of the following effects:
- The land within 6 miles of the lair takes twice as long as normal to traverse, as crystals spring out of the ground and make it difficult terrain.
- Water sources within 1 mile of the lair are supernaturally fouled. Enemies of the dragon that drink such water regurgitate it within minutes.
Fog lightly obscures the land within 6 miles of the lair.
If the dragon dies, crystals remains as they have grown, but other effects fade over 1d10 days.
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