Thundersong

Weapon (greataxe), legendary (requires attunement)

This weapon appears finely made but fairly unremarkable. It is a +3 greataxe that scores a critical hit on a roll of 19 or 20. It attempts to control any dwarf who touches it (no attunement required). If the dwarf dies while under the control of Thundersong, there is a 25 percent chance that they reanimate as a Servant of the Axe, an undead fanatical dwarf under the axe’s control. The axe is aware of everything its undead servants experience.

Sentience. The axe is a sentient chaotic neutral weapon with an Intelligence of 18, a Wisdom of 13, and a Charisma of 22. It can see, hear, and perceive with blindsense out to a range of 120 feet. It can speak and communicate telepathically.

Personality. The axe is selfish, controlling, and egotistical. Although it enjoys controlling dwarves, it hates all other species.