Osmumten's fang

"Fang" redirects here. For other uses, see Fang (disambiguation).

Osmumten's fang
Released							24 August 2022 (Update)
Also called							Fang
Members							Yes
Quest item							No
League region							Desert✓
Properties
Tradeable							Yes
Equipable							Yes
Stackable							No
Noteable							Yes
Options							Wield, Drop
Examine							A deadly sword created long ago.
Values
Value							1,000,000 coins
High alch							600,000 coins
Low alch							400,000 coins
Weight							1.814 kg
Grand Exchange
Exchange							12,475,873 coins (info)
Buy limit							8
Daily volume							1,772
View real-time prices
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Advanced data
Item ID							26219

Osmumten's fang is a one-handed stab weapon obtained as a rare reward from the Tombs of Amascut. It was the weapon of Pharaoh Osmumten, who was a skilled hunter. It requires level 82 Attack to wield. A cursed phalanx can be attached to the fang to create Osmumten's fang (or), a cosmetic variant of the weapon.

When using the Stab attack styles (Stab, Lunge, and Block), the fang has two unique passive effects which aim to make it effective against targets with high Defence levels and more consistent overall: re-rolling accuracy on an unsuccessful hit and making damage rolls closer to the average. The special combat mechanics are described in more detail below. Like spears, halberds, and magic, the fang is also able to deal full damage to the Corporeal Beast.

Combat stats

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

Combat style		Attack type	Weapon style	Attack speed	Range	Experience	Level boost
	Stab	Stab	Accurate	5 ticks (3.0s)	1 tile		+3 Attack
	Lunge	Stab	Aggressive				+3 Strength
	Slash	Slash	Aggressive				+3 Strength
	Block	Stab	Defensive				+3 Defence

Passive effects

A player attacks an opponent with Osmumten's fang.

When using Osmumten's fang, it has two passive effects, where it behaves differently at both stages of an attack. That is, when determining if a successful hit has occurred, and then how much damage is applied. The first effect only occurs when using the Stab attack style.

Successful hit chance

The first effect concerns the probability of landing a successful hit on an opponent and only occurs when using the Stab attack styles (Stab, Lunge, and Block), which differs depending on whether the weapon is used within or outside of the Tombs of Amascut raid. Within the raid, this check is performed using the standard mechanics, but is repeated; if either check succeeds, a successful hit has been made. This means the opponent's defence is also re-rolled, making the accuracy far higher.

When determining if the attack lands outside the raid, two independent accuracy rolls are made and if either is higher than the opponent's original defence roll, the attack succeeds. To calculate the exact probability, the following formula can be used (where ${\textstyle a}$ represents your maximum attack roll and ${\textstyle d}$ represents the opponent's maximum defence roll):

${\text{Hit Chance}}={\begin{cases}\displaystyle 1-{\frac {(d+2)(2d+3)}{6(a+1)^{2}}},&\quad {\text{when }}a\geq d,{\text{ and}}\\\displaystyle {\frac {a(4a+5)}{6(a+1)(d+1)}},&\quad {\text{when }}a<d.\end{cases}}$

In simpler terms, the fang rolls accuracy twice in a single hit.

Damage calculation

The second effect involves using a different formula to determine damage rolls and occurs with any attack type; unlike other weapons that roll between one and the maximum hit of the player upon a successful hit, the fang will instead always deal between 15% and 85% of the maximum hit upon a successful hit, except when making use of the weapon's special attack. For example, if the fang's true max hit was 60, it would roll between 9 and 51 instead of 1 and 60 (inclusive) damage upon a successful hit. While this effect does not increase the expected damage per second, it does have the effect of lowering the overall variance of the damage output.

Special attack

A player performing Osmumten's fang's special attack, Eviscerate.

Osmumten's fang has a special attack, Eviscerate, which consumes 25% of the player's special attack energy. The attack provides a 50% increase to accuracy for the next hit, and uses the fang's true max hit when determining damage rolls. For example, if the fang's true max hit was 60, it would roll between 9 to 60 damage upon a successful hit, rather than the usual 9 to 51 damage it would normally roll. This effectively increases damage by the same amount as a weapon special that increases max hit by 17.65%.

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Changes

Date	Changes
[[{{#explode:28 August 2024| |0}} {{#explode:28 August 2024| |1}}]] [[{{#explode:28 August 2024| |2}}]] (update)	The item's inventory icon was adjusted again so that the tip is not cut off in the inventory.
[[{{#explode:21 August 2024| |0}} {{#explode:21 August 2024| |1}}]] [[{{#explode:21 August 2024| |2}}]] (update)	The item's inventory icon was adjusted.
[[{{#explode:7 August 2024| |0}} {{#explode:7 August 2024| |1}}]] [[{{#explode:7 August 2024| |2}}]] (update)	The special attack animation has been updated to use a unique animation, rather than reuse that of the brine sabre. The item's model has been graphically updated slightly.
[[{{#explode:17 January 2024| |0}} {{#explode:17 January 2024| |1}}]] [[{{#explode:17 January 2024| |2}}]] (update)	The passive effect which performs a double-accuracy roll now only applies whilst Osmumten's fang is using the Stab attack styles, due to the fang's secondary Slash type being vastly superior compared to primary slash-based weapons against enemies weak to slash attacks.
[[{{#explode:11 January 2023| |0}} {{#explode:11 January 2023| |1}}]] [[{{#explode:11 January 2023| |2}}]] (update)	The item has been added to the Grand Exchange's item sink list.
[[{{#explode:31 October 2022| |0}} {{#explode:31 October 2022| |1}}]] [[{{#explode:31 October 2022| |2}}]]	Hotfix The fang will now only re-roll the player's accuracy roll, rather than re-rolling both accuracy and the monster's defence outside the Tombs of Amascut, due to it being vastly superior compared to other melee weapons even in super effective situations (e.g dragon hunter lance against dragons).
[[{{#explode:1 September 2022| |0}} {{#explode:1 September 2022| |1}}]] [[{{#explode:1 September 2022| |2}}]] (update)	The fang should now distribute damage accordingly rather than 'clamping' damage at the lowest hits. The Masori mask no longer has any graphical issues when worn with Osmumten's fang.

Gallery (historical)

24 August 2022 – 7 August 2024	7 August 2024 – 21 August 2024	21 August 2024 – 28 August 2024	28 August 2024 – present

Gallery

• 
  Concept art of Osmumten's fang by Mod Jerv.