"We are many. We are one. We are the Praeleanthor. You know us as the Soul Cube. Free us from our eternal prison and we will help you. Vanquish our enemies and we grow stronger. Listen for our call and then free us, to smite down the evil."
-Soul Cube, Doom 3
Soul Cube
Wondrous item, legendary, (requires attunement by a creature of non-evil alignment)
A small, metallic, alien cube with a cutout that exposes mechanical features, tubing, and lights. The central light appears to modeled after a face. It comes from a world that was devastated by fiends. As a final attempt in fighting the invaders, the Cube was created and filled with the souls of the world's survivors. The Soul Cube desires nothing but the destruction of fiends.
The Soul Cube has 5 charges. A charge is filled when you kill an evil creature, which energizes the Cube with the life force of the dying.
When the Soul Cube is fully charged, you can spend your action to target a creature within 30 feet of you and roll 8d8. The Cube unveils rings of spinning blades and flies towards the target, producing the following effects.
- The target takes magical slashing damage equal to the number rolled.
- Creatures within 5 feet of the target must succeed a Dexterity saving throw. The creatures take magical slashing equal to the number rolled on a failed save, or half as much damage on a successful one.
- You heal for half the number rolled.
Once the Soul Cube produces its effects, its blades retract, it returns to you, and its charges are expended. The Cube will only target creatures that are evil or have committed a grievous act, like murder or corruption. If the target is a fiend, damage from the Soul Cube ignores resistances and deals half-damage to fiends with immunity to slashing damage.
Sentience. The Soul Cube is a sentient neutral good item with an Intelligence of 16, a Wisdom of 20, and a Charisma of 20. It has hearing and truesight out to a range of 120 feet.
The item communicates telepathically with its wielder and can speak, read, and understand all languages. It speaks many voices in a calm, simultaneous whisper.
Personality. Due to its history, it has an intense hatred for fiends and evil and will only assist those who share this hatred. If it has not found a compatible user, it will lie dormant and refuse to be attuned.
By Lobstaris.
Soul Cube Concept from Doom 3.