Osmumten's fang

“A deadly sword created long ago.”

Osmumten's fang is a one-handed stab sword from the Tombs of Amascut. It needs 82 Attack, swings every 5 ticks, and has two passive effects that make its hits land more often and with steadier damage. Those effects are why it is a pick for targets with high Defence.

Equipment bonuses

The fang has +105 stab and +75 slash attack and +103 melee strength. It has no defensive or Prayer bonuses. Its attack speed is 5 ticks, and its attack range is 1.

Attack bonuses
+105
+75
0
0
0
Defence bonuses
0
0
0
0
0
Other bonuses
+103
+0
+0%
+0
Slot
Weapon

Requires 82 Attack to wield · one-handed · attack speed 5t / 3.0s · attack range 1 · members. The accuracy passive only applies to the Stab, Lunge and Block styles.

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How to get Osmumten's fang

The fang is a rare reward from the Tombs of Amascut. It has no other drop source.

Ways to obtain it
Tombs of Amascut — when a unique is rolled at the end of a raid, Osmumten's sarcophagus glows purple. Only one unique can come from a raid. The fang shares that pool with the Masori armour pieces, Lightbearer, Elidinis' ward and Tumeken's shadow.
Grand Exchange — it is tradeable, with a buy limit of 8 every 4 hours.

The unique chance changes with raid level, and updates have lowered the fang's weighting at high raid levels.

Adding a cursed phalanx to the fang gives you Osmumten's fang (or). That is a cosmetic version of the same weapon.

What makes the fang different

The fang has two passive effects that a normal sword does not.

  • Accuracy: on the Stab, Lunge and Block styles, the fang gets a second accuracy roll. Outside the raid it rolls your accuracy twice against the target's Defence roll. Inside the Tombs of Amascut it repeats the whole check, including the defender's roll.
  • Damage: on a successful hit the fang rolls between 15% and 85% of your max hit, instead of 1 up to the max. This does not raise average damage per second but makes the damage more even.

The fang also deals full damage to the Corporeal Beast, like spears, halberds and magic.

The special attack is Eviscerate. It costs 25% special attack energy and gives a 50% accuracy increase for the next hit. It also rolls damage up to your true max hit, instead of the usual 85% limit.

Osmumten's fang compared with other melee weapons

The closest sword is the Ghrazi rapier. The rapier has +100 stab, +55 slash and +93 strength, needs 80 Attack and swings every 4 ticks. The fang has higher bonuses (+105 stab, +75 slash, +103 strength) but swings every 5 ticks.

The rapier ties with a few other weapons for general-use damage. The fang does better against high Defence targets and the Scythe of Vitur does better against large targets. Use the DPS calculator with your own gear and target to compare them.

Osmumten's fang FAQ

What level do you need for Osmumten's fang?
82 Attack. It has no quest requirement.
How do you get Osmumten's fang?
It is a rare reward from the Tombs of Amascut, one of the uniques that can appear in Osmumten's sarcophagus. You can also buy it on the Grand Exchange, where the buy limit is 8 every 4 hours.
What does the Osmumten's fang special attack do?
Eviscerate costs 25% special attack energy. It gives a 50% accuracy increase for the next hit and lets that hit roll up to your true max hit, instead of the usual 85% limit.
How does the fang's passive work?
On Stab, Lunge and Block it gives each attack a second accuracy roll. On any style it makes successful hits roll between 15% and 85% of your max hit. The result is more consistent damage, not a higher average.
Osmumten's fang or Ghrazi rapier?
The fang has higher bonuses than the rapier but swings one tick slower. The fang does better against high Defence targets. Compare both with the DPS calculator for your own target and gear.
Does the fang work on the Corporeal Beast?
Yes. The fang deals full damage to the Corporeal Beast, like spears, halberds and magic.
Does the passive work outside the Tombs of Amascut?
Yes, on the stab styles. Outside the raid it rolls your accuracy twice. Inside the raid, the whole check repeats, including the target's defence roll.
What is Osmumten's fang (or)?
It is the fang with a cursed phalanx attached. It is a cosmetic variant of the same weapon.

Update history

7 Aug 2024The special attack got its own animation, and the model had a small graphical update.
17 Jan 2024The double accuracy roll now only applies on the Stab styles, because the slash style was too strong against enemies weak to slash.
11 Jan 2023The fang was added to the Grand Exchange item sink list.
31 Oct 2022Outside the Tombs of Amascut, the fang now rerolls only your accuracy and no longer rerolls the target's defence.
1 Sep 2022Damage is now spread properly instead of clamping at the lowest hits.

Source: OSRS Wiki — Osmumten's fang (Changes).