Continual Flame 5e: Ruby Dust, Darkness, and Permanent Light

I’ve always liked utility spells that quietly reshape how an adventuring party operates, and Continual Flame is a perfect example. It does not burn, spread, or need fuel; it simply turns an object into a permanent source of torchlight. The lasting convenience is excellent, but every casting consumes valuable ruby dust, so choosing the right objects matters.

Continual Flame 5e — Quick Spell Reference

How Continual Flame Works

The caster touches an object and causes a flame with the brightness of a torch to spring from it. Under the 2014 rules, a torch sheds bright light in a 20-foot radius and dim light for another 20 feet.

The flame looks like an ordinary flame, but it creates no heat and consumes no oxygen. It cannot ignite an object, deal fire damage, cook food, or provide warmth. Covering the affected object blocks its light, but smothering or quenching it does not end the spell.

Continual Flame requires no concentration and lasts until dispelled. The enchanted object can be carried, stored, covered, or left in place without ending the effect.

The Object and Material Cost

The spell targets one object the caster can touch. A hooded lantern makes the light easy to reveal or conceal, while a weapon, shield, helmet, stone, or other portable object can provide hands-free illumination when circumstances allow. The spell does not make the object magical for every purpose or give it any property beyond the magical flame.

Each casting consumes ruby dust worth 50 gp. A spellcasting focus or component pouch cannot replace a material component with a listed price, and the same dust cannot be reused after the spell is cast. The long duration can make that one-time expense worthwhile, but casting the spell on several objects requires paying the cost separately for each one.

Darkness, Covering, and Dispelling

Ordinary water, wind, lack of air, and attempts to smother the flame do not extinguish it. An opaque cover can still stop the light from illuminating its surroundings, just as it would block any other light source.

The spell can end if it is dispelled. Under the 2014 rules, Darkness also dispels a light-creating spell of 2nd level or lower when their areas overlap, so it can end Continual Flame cast with a 2nd-level slot. When a spell is cast using a higher-level slot, it assumes that slot’s level for that casting; this means a Continual Flame cast with a 3rd-level or higher slot is not removed by that particular clause of Darkness. It can still be ended by effects such as Dispel Magic.

Continual Flame: 2014 vs. 2024 Rules

The core effect remains the same in the 2024 rules: the spell creates permanent torch-like light on a touched object, produces no heat, consumes no fuel, and cannot be smothered or quenched. The revised wording makes the 20-foot bright and additional 20-foot dim radii explicit.

Rule	2014 version	2024 version
Classes in the Player’s Handbook	Cleric, Wizard	Cleric, Druid, Wizard
Light description	As bright as a torch	Explicit 20-foot bright and 20-foot dim light
Material cost	Ruby dust worth 50 gp, consumed	Ruby dust worth 50+ gp, consumed

The material gameplay change is access for druids in the 2024 Player’s Handbook. The light radius and minimum component cost remain effectively the same. This page’s spelltable and main rules explanation use the 2014 version.

Practical Uses and Limitations

Continual Flame is useful for permanent room lighting, marking a safe route, illuminating a party member who needs both hands, or preparing a light that can be quickly covered. Because it needs no fuel or concentration, it is especially convenient for long expeditions.

The spell is not a substitute for fire. It cannot light a fuse, burn a web, warm a campsite, or harm a creature vulnerable to fire. Its visible light can also reveal the party’s position, so a coverable object is often more flexible than an exposed one.

Casting at Higher Levels

Continual Flame has no general higher-level benefit: a higher slot does not increase its radius, add targets, or make it brighter. Using a slot of 3rd level or higher can matter specifically when interacting with the 2014 Darkness spell, as described above.

FAQ

Does Continual Flame burn or deal fire damage?

No. Its flame produces light but no heat, and the spell gives it no damage or ignition effect.

Can water or wind put out Continual Flame?

No. The magical flame cannot be smothered or quenched. It lasts until an effect dispels it.

Can the light be hidden?

Yes. Covering the affected object with something opaque blocks the light without ending the spell.

Does the ruby dust get consumed?

Yes. Every casting consumes ruby dust worth 50 gp under the 2014 rules.