Carthus Flame Arc is a Pyromancy in Dark Souls 3. To cast a Pyromancy you must use a Flame or Special Weapons that can cast Pyromancies.

Carthus Flame Arc

Spell Type


FP Cost Focus Cost 30
Slots Used Slots Used 1
Requirments 10 Intelligence/ 10 Faith
Duration 90 Seconds



Pyromancy of Carthus of the Sands. Reinforces right weapon with flame. 

Warriors of Carthus favored supplemental pyromancies such as this, which was used to enhance the curved blades of its swordsmen."





  • Adds (Spell Buff * 0.9) fire damage to the weapon.
    • Damage is applied each time the enemy is hit with the weapon, regardless of the damage of the attack performed.
    • The buff can be easily identified by the flaming weapon
  • Good choice for melee characters looking for bonus damage with minimal stats.
  • Like all Weapon Buffs, Carthus Flame Ark will only work on weapons with raw, refined, hollow, sharp, heavy, or no infusion.
  • Buff length is extended by the Lingering Dragoncrest Ring.
  • Uniquely, this buff lasts 90 seconds, 50% longer than any other weapon buffing spell. This, combined with its low requirements and good damage, make it an incredible choice for melee builds.
  • A few weapons and weapon arts have hidden multipliers that slightly lower the buff's damage per hit.
    Namely, Daggers and Paired Weapons display this adjustment.
    Regardless, the buffs always remain efficient.


Acid Surge  ♦  Black Fire Orb  ♦  Black Flame  ♦  Black Serpent  ♦  Boulder Heave  ♦  Bursting Fireball  ♦  Carthus Beacon  ♦  Chaos Bed Vestiges  ♦  Chaos Storm  ♦  Fire Ball  ♦  Fire Orb  ♦  Fire Surge  ♦  Fire Whip  ♦  Fireball  ♦  Firestorm  ♦  Flame Fan  ♦  Floating Chaos  ♦  Great Chaos Fire Orb  ♦  Great Combustion  ♦  Iron Flesh  ♦  Poison Mist  ♦  Power Within  ♦  Profaned Flame  ♦  Profuse Sweat  ♦  Rapport  ♦  Sacred Flame  ♦  Seething Chaos  ♦  Toxic Mist  ♦  Warmth

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    • Anonymous

      21 Jun 2021 21:05  

      I feel like this is a little weaker than most if not all the other magic spellbuffs so I think it should've been unlocked through the great swamp tome instead of the carthus pyromancy tome

      • Anonymous

        10 Jun 2021 13:39  

        Carthus Flame Arc vs Chaos infusion:

        Use CFA if you have a weapon that requires minimum stats and is relatively small and fast.

        Examples: Daggers, Hand Axe, Thrall Axe, Straight swords, Mace, Morning Star.

        Use Chaos infusion if you want more requirement intensive weapons to save levelling Attunement.

        Examples: Great swords, Ultra GS, Great Hammers/Clubs, pikes/spears.

        • Anonymous

          04 May 2021 06:58  

          This spell is great once you get tired of minmax builds and just wanna look cool with your no softcaps reached slightly illogical meta ASF pyro swordsman... Burn it all!

          • Anonymous

            25 Mar 2021 19:11  

            Good for SL1, also absolutely op if you do buff glitch and apply this to a frost weapon, since it resets the frost cooldown so you don't have to wait 30 seconds to apply frost again

            • Anonymous

              08 Mar 2021 12:21  

              Is the damage on this pyromancy worth it? Almost all other weapon buff spells seem to have better damage to stat investment ratios. Ex: 35int/fth adds 174 fire dmg, meanwhile 40int with heretic staff adds 171 magic dmg.

              • Anonymous

                03 Nov 2020 14:43  

                I was just testing how rings affect this and found something useful. Neither rings that boost pyromancies seem to affect this.
                But the Priestess Ring does make it stronger, since it boosts the Faith stat. I assume the Scholar Ring would boost it too, but I didn't have that yet.
                The Priestess Ring could be a good substitute for the Fire Clutch Ring, since it doesn't decrease absorption

                • Anonymous

                  28 Sep 2020 04:53  

                  How much damage can a +10 LKS with refined insusion deal with a +6 Pyromancy flame with 31/31 with STR and DEX and 16/16 Faith/Intelligence?

                  • Anonymous

                    14 Aug 2020 11:03  

                    Isn't the DMG kinda weak? I mean against mobs weak to fire you'd want chaos and in PvP when you get the 40/40 their def to fire is usually 130+ then the absorb... I feel like pyro catalyst has to low a number to make it efficient.. atleast it looks amazing

                    • Anonymous

                      26 Jul 2020 23:26  

                      Flame arc adds good AR and since the chaos/dark infuse soft cap is 30/30.. this triumphs them if you lvl dex/strength at half decently... I did for awhile but I'd rather go dark/chaos and lvl up elsewhere as a pyro main.. my asg had 619 AR at 30/30 which is fine since it complimented that I didn't need to spend more in str/dex and the split DMG wasn't much different in ratio at all.. with CFA it would just be mostly physical and lighter fire DMG...

                      • Anonymous

                        22 Jul 2020 07:39  

                        At 40/40 Is it worth using a 10+ astoras greatsword with the carthus flame arc buff or a 10+ chaos astora greatsword

                        • 12 Jul 2020 22:42  

                          Love conflicting information, spellbuff of 336*0.9 would equal 302.4 fire damage, resistances on different enemies differ so you should test on the fire keeper and not other enemies, or at least provide sources

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