Innate Spellcasting. The Salamandra  can innately cast the following spells, requiring no material components:

1/day each: Etherealness, Blink

Regeneration. The Salamndra regains 20 hit points at the start of its turn. If the Salamandra takes radiant damage, this trait doesn't function at the start of the Salamandra's next turn. The Salamandra can only regenerate while it has hit points. This trait also doesn't function if the Salamandra is possessing a trophy.

Legendary Resistance (1/Day). If the Salamandra fails a saving throw, it can choose to succeed instead.

Multiattack. The Salamandra can use its Frightful Presence. It then makes three attacks: one with its bite and two with its claws.

Bite. Melee Weapon Attack: +14 to hit, reach 10 ft., one target. Hit: 19 (2d10 + 8) piercing damage plus 7 (2d6) fire damage.

Claw. Melee Weapon Attack: +14 to hit, reach 5 ft., one target. Hit: 15 (2d6 + 8) slashing damage.

Tail. Melee Weapon Attack: +14 to hit, reach 15 ft., one target. Hit: 17 (2d8 + 8) bludgeoning damage.

Frightful Presence. Each creature of the Salamandra’s choice that is within 120 feet of the Salamandra and aware of it must succeed on a DC 17 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 Salamandra’s Frightful Presence for the next 24 hours.

Abyssal Smog (Recharge 5–6). The Salamandra exhales a plume of stinking smog in a 60-foot cone. Each creature in that area must make a DC 19 Constitution saving throw, taking 35 (10d6) fire damage and 14 (4d6) poison damage, and becoming poisoned for 1 minute on a failed save, or half as much damage and not being poisoned on a successful one.

Death Curse. When a creature reduces the Salamandra's hit points to zero it is cursed. A cursed creature gains an overwhelming desire to keep a piece of the Salamandra's body as a trophy which it will then obsess over and defend from all who would take it. The Salamandra's spirit will come to inhabit the trophy. It is fully aware of its surroundings and can choose to communicate with its host telepathically, but to all observers it appears inert and dead. Spells that detect creatures also do not reveal the Salamandra's presence but creatures that can see into the Ethereal realm can see the Salamandra's spirit following its host.

Once a day the Salamandra can whisper to its host and attempt to drive it to paranoid madness. The host creature must make a DC 18 wisdom saving throw. If it fails the creature' s wisdom score decreases by two and the Salamndra's spirit regains 50 hit points. Additionally the creature must roll on the Long-Term Madness table in the Dungeon Masters Guide.

If the Salamandra's spirit has at least 100 hit points it can choose to instantly regrow its body, appearing within five feet of the trophy from which it grows. Another creature can end the curse by targeting the host with Remove  Curse or Greater Restoration. The Salamandra can attempt to negate the spell by making a Charisma saving throw against the casters Spell save DC. On a success the spell fails and the host cannot be targeted with that spell until it has taken a long rest.

Destroying the trophy or separating it from the host for more than 3 days ends the curse early. if the curse is lifted the Salamandra is destroyed. The effects of the curse vanish one hour after the curse is lifted.