Obsidian Greatsword
Obsidian Greatsword+5

physical damage dark souls 480 critical dark souls 100
magic damage dark souls - stability dark souls 38
fire damage dark souls - durability dark souls 350
lightning damage dark souls - weight dark souls 8.0
Requirements & Bonus
strength dark souls dexterity dark souls intelligence dark souls faith dark souls
20 16
Weapon Type Greatsword
Attack Type Regular
Enchantable Yes
Special Yes
 

Obsidian Greatsword is a Weapon in Dark Souls and Dark Souls Remastered. (AotA only)

 

This greataxe, one of the rare dragon weapons, is formed by the tail of the one-eyed black dragon Kalameet, the last of the ancient dragons. The mystical power of its obsidian blade will be released when held with both hands."

 

How to Get / Where to Find the Obsidian Greatsword

  • Obtained by cutting off the tail of Black Dragon Kalameet. This is difficult to do, as the opportunities to strike the tail without ranged weapons are short and infrequent without the help of phantoms.

 

Notes:

  • Can be given to Kingseeker Frampt to receive 100 Souls.
  • Obsidian Greatsword can be upgraded by using Dragon Scales.
  • Two-handed heavy R2 attack creates black flames over a 360-degree Area of Effect around the user. These flames deal Physical and Magic damage, and not Fire damage. The flames inflict significant poise damage and almost always stagger targets, including bosses. For this reason, the sword can be used very effectively against Artorias the Abysswalker, among others, notably during the long windup to his charge attacks. 
  • This strong two-handed R2 attack consumes 50 weapon durability when cast. You can use this attack 7 times until this weapon's durability drops to 0 points and it breaks.
  • Only 14 Strength is required to use this sword if held in both hands.
  • Despite being referred to as a Greataxe in-game, this weapon is classified as Greatsword.
  • This sword can also be buffed. Buffing it also increases the damage dealt by the special R2 attack, dealing an appropriate amount of damage of the type determined by the buff. For example casting Miracle: Sunlight Blade and then using the two-handed R2 not only causes it to deal more damage, but to deal that extra damage as Lightning elemental damage.

 

Youtube relevant videos:

  • N/A

 

Obsidian Greatsword Upgrade Table

Dragon Upgrades may be performed by any Blacksmith, as long as you have the required materials.
To reach max, you need: 50,000 souls and 10 dragon scale dark souls s Dragon Scales.

  Attack Values Parameter Bonus Auxiliary Damage Reduction (%) Stability
Obsidian Greatsword physical damage dark souls magic damage dark souls fire damage dark souls lightning damage dark souls strength dark souls dexterity dark souls intelligence dark souls faith dark souls divine dark souls occult dark souls physical defense dark souls magic defense dark souls fire defense dark souls lightning defense dark souls stability dark souls
Regular 320 - - - - - - - - - 60 10 40 40 38
Regular +1 (dragon scale dark souls sx1) 352 - - - - - - - - - 60 10 40 40 38
Regular +2 (dragon scale dark souls sx1) 384 - - - - - - - - - 60 10 40 40 38
Regular +3 (dragon scale dark souls sx2) 416 - - - - - - - - - 60 10 40 40 38
Regular +4 (dragon scale dark souls sx2) 448 - - - - - - - - - 60 10 40 40 38
Regular +5 (dragon scale dark souls sx4) 480 - - - - - - - - - 60 10 40 40 38



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    • Anonymous

      Put this baby on a faith build with min stat and dmb/slb. Press R2, watch the backstab fisher disappear in a sec

      • Anonymous

        In regards of cutting kalameet's tail, it depends on the weapon you use for it. From perdonal experience, black knight glaive can sever it's tail in less than 5 minutes. Should be easier with other polearms or ultra gs with vertical strikes.

        As for the special attack, kalameet dealt physical and magic instead of fire. If this flame were exactly the same, great/crystal magic weapon would be nuts to boost the AoE's inherent damage.

        • Anonymous

          Not really too difficult to obtain, did it at my second attempt after learning about its existence (I was killed at least 8 times before trying to simply defeating him). Using Gravelord Sword It took me 3 swipes in diferent moments. You just have to be very pacient in this combat, and when he does his glide charge attack make sure to place you behind him. He would use his tail stomp, get the timing right to dodge it and you will have like a 3 seconds window to slam his tail (just 1 hit allowed I think). With Gravelord sword it took me 3 hits to cut it, then I killed him. Really satisfying and challenging boss.

          • Anonymous

            After 5 straight hours, probably over 100 attempts I gave up on getting this mfrs tail. I'm not the guy who wants the Knights Honour achivement, I just want it for the use of owing it but this boss is probably the worst in the game. I'll take Seath over this ******* any day of the week. F*uck this boss honestly

            • Anonymous

              Cutting the tail - 20 flasks. Killing kalameet - 1/3 of HP bar. I would much prefer if getting tail was easier and boss itself was harder. On top of that obsidian tail is most useful for twinks which is a problem by iteslf.

              • Anonymous

                It's a great weapon for sorcerers, but also one of the hardest to get for sorcerers. Good luck freeaiming those crystal soul spears my friends

                • Anonymous

                  Getting his tail is the ultimate test of patience. I managed to get it and kill him in same try. This fight took like 10 minutes. It took me like 10 or 15 tries to learn his patterns well and after that it was fairly "easy". U need to bait him to do his fly and rush you kind of attack by staying in mid distance from him, roll left, then when he passes you you roll right and then he slams his tail to the ground. U can then hit it once with zweihänder r2, takes 2 hits with zwei+15.

                  Rywin

                  • Anonymous

                    This is a great weapon for int or faith builds, it doesn't scale with anythings, only need 14 Str to 2H (that you probably already have for MLS) and has a huge base damage and can be buffed with Crystal weapon or Sunlight blade for about ~950 AR, its base damage does more damage than MLS on most enemies. The only problem is that you get it only in very later game and is a pain to get it.

                    • Anonymous

                      Solo, I find the easiest way to get this is to fight with your BACK to a wall. Keep dodging his attacks and wait for his lunging flame sweep attack. Since you next to the wall he won't go very far giving you TONS of time to go around and hit his tail. The breath part of this attack is also ridiculously easy to dodge at close range. This method is much more consistent. In 3 days of fighting him I only got him to do the tail slam once.

                      • Anonymous

                        Soo much hate for mh in the comments , the past mh games were definitely on par if not more difficult than souls series not including sekiro but 5th gen mh are easy af compared to souls' but then there is ds3 where you can roll for days

                        • Anonymous

                          Hitting the tail after the tail attack is the most long way... You can just hit it when he uses the red energy grab or the flame spit in the same position of the grab. They are not rare attacks, you can gust stand in front of him and wait for him to stand up on the posterior legs and rush to the tail.

                          • Thank god the demons greataxe cut off his tail in one hit I don’t find kalameet to really be that hard personally but I died so many times sprinting around his backside to get to his tail before losing track of him as the camera got stuck in his gut

                            • Anonymous

                              weapon name = Obsidian greatsword
                              description = This GREAT AXE one of the rare...
                              hmmm strange maybe its both any clue?

                              • Anonymous

                                After dying countless times trying to even get a shot at this bastards tail, I finally realized that it was futile and decided just to kill him so It would stop me from the madness! NO MORE DOGS!!! I attuned power within, put on my sorcery ring and that sorcery wing head dress thingy and went to town, he did his flyover and one of my crystal soul masses mysteriously hit his tail in flight and I got it! Now after 1500 hours of game play over 2 years on 2 platforms I *think* their is nothing else I to discover or accomplish in this game, but who knows. Goodluck!

                                • Anonymous

                                  I was so excited when i finally cut that ****er's tail off, and then i noticed it had no scaling.... thank you dark souls

                                  • Anonymous

                                    Testing taking a hit from the same attack while stationary with and without the weapon equipped. It seems like I take more damage with it equipped.

                                    • Anonymous

                                      How good is this thing in endgame? I’m reading a lot of good things about it, and I’m very curious indeed.

                                      • Anonymous

                                        LMAO am I the only who cut all the monsters tail in there first walkthrough? Including this.. well, as a Monster Hunter World veteran cutting monster tails is to basic asf

                                        • Anonymous

                                          High damage when fully upgraded (unlike the dragon great sword that even at max lvl does only 200-300 damage) but still not a good weapon for bosses such as 4 kings and death

                                          • Anonymous

                                            If you are going for minimum requirements you have the stats to two-hand the gravelord sword. It’s a good choice for cutting the tail at a low level. The running attack is fast and powerful. Easiest way to cut the tail solo is to stay at a medium-far distance away from him to bait the diving attack. When he flies at you roll to the left, get behind him and position yourself directly beneath the tail. This will bait his tail slam attack allowing you to get 1-2 free hits. Remember you MUST position yourself DIRECTLY beneath the tail otherwise he will not follow up.

                                            • Anonymous

                                              It can be obtained very late and have low requirements with no scaling. Definitely weapon for veterans to make low level character get it somehow at low level(through sheer skill or friends help)designed specifically to abuse newbies. Even its special attack is designed as newbie buster.

                                              • Not so hard to get as it first seems. Especially with internet nowadays it's easy to find out but eventually one will figure how to bait the tail slam and get easy free hits.

                                                • Anonymous

                                                  Best way to cut off the tail is to bait his tail slam when you're behind him. It stays on the ground for a second after he slams, which is an excellent opportunity to punish. Took me three tail slams until I cut it. The rest of the time it's just too damn high to hit with any melee weapon.

                                                  • Anonymous

                                                    Remastered does not list the sword as a greataxe, it is properly listed as a greatsword on the item description

                                                    • Anonymous

                                                      Full R2 is pretty underwhelming. I mean, its awesome, and cool, but half the time you'll just get backstabbed and the other half they'll roll out of it. BUT, IF YOU ARE A GOD OF LAG LIKE SOME PEOPLE I KNOW ARE, THIS THING IS GOD LEVEL, 20/3. Spam that full R2 and wait for them to go in, not realising for you it looked like you used it about 5 minutes ago as they get hit in the face by it.

                                                      • Anonymous

                                                        When using DMB + Darkmoon Talisman (rank 3) at 50 faith on this weapon, the AR is 474(.6) magic 480 physical. Go wild with your 954 damage weapon that will do more than 300 damage through your average shield.

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