Fafnir

Huge dragon, neutral evil

Armor Class 18 (natural armor)
Hit Points 168 (16d12+64)
Speed 50 ft., climb 50 ft.

STR	DEX	CON	INT	WIS	CHA
21 (+5)	20 (+5)	19 (+4)	11 (+0)	12 (+1)	14 (+2)

Saving Throws Str +9, Con +8, Wis +5, Cha +6
Skills Athletics +9, Perception +9, Stealth +9, Survival +5
Damage Resistances acid, cold, fire
Damage Immunities poison
Condition Immunities charmed, frightened, poisoned
Senses blindsight 30 ft., darkvision 90 ft., passive Perception 19
Languages Draconic, Dwarvish
Challenge 12 (8,400 XP)

Special Traits

• Innate Spellcasting. The dragon’s innate spellcasting ability is Charisma. The dragon can innately cast the following spells, requiring no material components:
  • At will: speak with animals (birds only)
• Legendary Resistance (3/day). If the dragon fails a saving throw, it can choose to succeed instead.
• Mythical Creature. All of the dragon’s attacks are magical and it has advantage on saving throws against spells and other magical effects.
• Scorching Blood. Whenever a creature damages the dragon with a melee weapon attack and it is using a weapon that does not have reach, the creature takes 3 (1d6) fire damage.

Actions

• Multiattack. The dragon can use its frightful presence. It then makes four attacks: one bite, two claws, and one tail slap attack.
• Bite. Melee Weapon Attack: +9 to hit, reach 15 ft., one target. Hit: 16 (2d10+5) piercing damage.
• Claw. Melee Weapon Attack: +9 to hit, reach 10 ft., one target. Hit: 9 (1d8+5) slashing damage.
• Tail Slap. Melee Weapon Attack: +9 to hit, reach 20 ft., one target. Hit: 14 (2d8+5) bludgeoning damage.
• Frightful Presence. Each creature of the dragon’s choice that is within 120 feet and aware of it must succeed on a DC 16 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.
• Breath Weapons (Recharge 4–6). The dragon uses one of the following breath weapons.
• Fire Breath. The dragon exhales fire in 90-foot line that is 5 feet wide. Each creature in that line must make a DC 16 Dexterity saving throw, taking 49 (14d6) fire damage on a failed save, or half as much damage on a successful one.
• Poison Breath. The dragon exhales venomous mist in a 60-foot cone. Each creature in that cone must make a DC 16 Constitution saving throw, taking 49 (11d8) poison damage on a failed save, or half as much damage on a successful one. When a creature has taken 40 poison damage from this attack, it is poisoned until the damage is healed.

Legendary Actions

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.

• Magic Detection. The dragon makes a Wisdom (Perception) check. This check is made as if the dragon had cast detect magic, though it does not require an action to see magical auras.
• Tail Attack. The dragon makes a tail slap attack.
• Spew Poison (Costs 2 Actions). The dragon coughs up a wave of caustic and toxic mucus in a 30-foot cone. All vegetation in the area immediately dies. In addition, for the next minute it becomes difficult terrain and any creature that ends its turn in the area takes 3 (1d6) acid damage and 3 (1d6) poison damage.

About

Fratricide, patricide, and cursed gold? Dwarf turned dragon!? Inspiration for Smaug? I’m sure you know that we’re talking about that envious stout-folk- turned-serpent Fafnir!

Odin, Loki, and their companion Hœnir were hanging out and noticed this unusual otter, but it was not actually a fuzzy little animal—it was Ótr, a dwarf who could shapeshift to take the form of an otter. Loki stoned the otter to death and they skinned it, showing it off soon after to the dwarf Hreidmar—who unfortunately happened to be Ótr’s father. He was not happy about it, and together with his two not-dead sons Fafnir and Regin he captured the trio.

In order to set them free, he demanded that the otter skin be filled with gold, and Loki promised to do so.