How Flametongue works at a glance
Flametongue is a 1st-level transmutation cantrip that requires a touch attack on a willing creature or an unattended object. On a hit, the target weapon glows with fire until the start of your next turn. Until then, any attack roll made with the weapon deals an additional 1d4 fire damage. The spell lasts for 1 minute and does not require concentration, so you can maintain it alongside concentration spells. Notably, you deliver the touch once, then the effect stays active based on duration, not repeated touch attacks.
Quick reference table
| Attribute | Verified detail | Source context |
|---|---|---|
| Spell level | 1st-level cantrip | Player's Handbook (PHB) |
| Casting time | 1 action, touch range | PHB |
| Components | V, S, M (a tiny piece of coal) | PHB |
| Duration | 1 minute | PHB |
| Concentration | No | PHB |
| Damage on hit | 1d4 fire damage per attack | PHB |
| Interaction with two-weapon fighting | Only one weapon needs to be touched; off-hand attacks do not automatically get the fire damage | Rules as written, subject to DM discretion |
What counts as an attack for Flametongue
To trigger the bonus fire damage, the weapon must be used to make an attack roll. This includes most melee and ranged weapon attacks that rely the Attack action, the bonus action from Two-Weapon Fighting, or the Attack action granted by features such as fighting style or class features. The following examples clarify edge cases:
- Opportunity attacks: Yes, an opportunity attack with the touched weapon triggers the 1d4 fire damage.
- Extra Attack: Each attack roll from the Attack action can apply the fire damage, provided the weapon remains touched and the effect is still active.
- Additional attack features: Features that grant an attack using the same weapon (for example, a Battle Master maneuver) typically work, because they rely on an attack roll.
- Spell attacks that use a weapon: If a feature says to make an attack roll with a weapon, treat it as an attack for Flametongue. Effects that deal damage without making an attack roll do not trigger the extra fire damage.
Duration, concentration, and maintaining Flametongue
Because Flametongue has a fixed duration of 1 minute and does not require concentration, it is low-maintenance and reliable in extended combats. You cast it as a bonus action or use downtime to refresh it, and it remains active even if you are concentrating on another spell. If you drop concentration on a different spell or are incapacitated, Flametongue persists. The main upkeep consideration is ensuring you remember to touch a weapon before you expect to make attacks, and refreshing the duration before long fights or when returning to safety.
Duration scenarios at a glance
| Scenario | Effect on Flametongue | Why it matters |
|---|---|---|
| Concentration spell active | Flametongue remains active | No conflict with concentration |
| Concentration dropped | Flametongue remains active | Safe in tough fights |
| Incapacitated or unconscious | Flametongue remains active | No concentration to lose |
| Effect ends after 1 minute | Flametongue ends | Plan to refresh as needed |
Practical uses in combat
In combat, Flametongue shines when you have a weapon-based build that already relies on multiple attacks. A fighter with Extra Attack can consistently apply 1d4 fire damage per attack, which adds up across a round. Ranged weapon builds also benefit, particularly when making multiple ranged attacks using Action Surge, Haste, or similar effects. Because the spell does not require concentration, you can pair it with defensive or utility concentration spells and still deal reliable fire damage each turn.
Compare this to alternatives:
If your build already centers on weapon attacks, Flametongue gives consistent fire damage without the trade-off of maintaining concentration.
Exploration and downtime uses
Out of combat, Flametongue is niche but situationally useful. You can use the bonus action to touch a torch, lantern, or improvised incendiary tool and then make an attack that also sets an object on fire, assuming the DM rules the effect allows it. This can help with exploration in dark environments or when you need to quickly ignite materials for traps, signals, or roleplay moments. The spell is also helpful for creative problem-solving when the narrative calls for a small flame applied with a weapon strike, though it does not create a persistent area of fire or provide ongoing illumination.
Classes and builds that gain the most value
Flametongue is most appealing to classes that make many weapon attacks and already manage action economy well. Fighters with Action Surge can burn through a short-duration buff efficiently, and monks using monk weapons can add fire damage to their unarmed strikes if the DM allows touching improvised weapons. Rangers, especially those focusing on dual-wielding or two-weapon fighting styles, can reliably trigger the extra damage. Warlocks using a pact weapon that allows attack rolls also find it useful, particularly when they lack strong evocation options at early levels. In general, the spell delivers the most value when you can reliably make multiple attacks with a weapon each round.
Limitations and common questions
Because you must touch a weapon each time you want to refresh the effect, there is a minor action cost and opportunity cost to maintain it. Also, only the weapon you touch receives the benefit; off-hand attacks from two-weapon fighting do not automatically gain fire damage unless the DM allows it or another feature duplicates the effect. The damage is modest (1d4), so Flametongue is not a damage spike like higher-level spells, but its consistency and lack of concentration make it a dependable choice across long campaigns.
Flametongue remains a useful, evergreen option for players who want steady fire-tinged weapon damage with minimal resource trade-offs. Understanding when to cast it, which weapons to apply it to, and how it compares to other early-level options helps you decide whether it belongs in your regular 5e spell repertoire.