You conjure black flames drawn from the primordial void—an unnatural combustion that consumes all matter, independent of air, fuel, or environment.
Choose a point you can see within range. A sphere of voidfire with a 10-foot radius appears at that point and persists for the duration. The sphere’s radius increases by 5 feet at the start of each of your turns while you maintain concentration.
The voidfire blocks line of sight through the area.
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Voidfire Damage:
When the sphere appears, and whenever a creature enters the area for the first time on a turn or starts its turn there, that creature must make a Constitution saving throw.
• Failure: The creature takes 12d10 fire damage and is blinded until the end of its next turn.
• Success: The creature takes half as much damage and is not blinded.
Voidfire Properties:
• The fire ignores environmental conditions and is not extinguished by water, lack of oxygen, vacuum, or magical effects that normally suppress fire.
• A creature’s immunity to fire damage is treated as resistance against this spell.
• Fire resistance applies normally.
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Absolute Combustion. Nonmagical objects in the area ignite and may be destroyed at the DM’s discretion if they are not being worn or carried.
Magical objects are not automatically destroyed but take damage from the spell as normal.
Disintegration. Any creature reduced to 0 hit points by this spell is disintegrated, leaving behind only drifting black ash.
A creature disintegrated in this way can be restored to life only by true resurrection, wish, or comparable magic at the DM’s discretion.
* - (a fragment of charcoal ground to dust and a shard of black obsidian, both consumed)DM Notes
Voidfire is designed as a tier-4 battlefield control and annihilation spell, not a burst-damage replacement for fireball-style effects. Its power lies in sustained pressure, area denial, and inevitability if left unchecked. Enemies with mobility, teleportation, or the ability to break concentration remain effective counters. Use this spell to signal apocalyptic magic, planar-scale threats, or moments where the battlefield itself becomes hostile to existence.
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