Osmumten's fang

Osmumten's fang
Released							24 August 2022 (Update)
Members							Yes
Quest item							No
Properties
Tradeable							Yes
Equipable							Yes
Stackable							No
Noteable							Yes
Options							Wield
Destroy							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							47,637,110 coins (info)
Buy limit							8
Daily volume							3,651
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.

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.

Attack bonuses
+105		+75		+0		+0		+0
Defence bonuses
+0		+0		+0		+0		+0
Other bonuses								Slot
+103		+0		+0%		+0		List
Base attack speed							Range
							1 square

Combat styles

Category: Stab Sword	Combat Style	Style type	Weapon Style	Experience	Invisible Boost
	Stab	Stab	Accurate	Attack and Hitpoints	+3 Attack
	Lunge	Stab	Aggressive	Strength and Hitpoints	+3 Strength
	Slash	Slash	Aggressive	Strength and Hitpoints	+3 Strength
	Block	Stab	Defensive	Defence and Hitpoints	+3 Defence

Passive effects

A player attacks an opponent with Osmumten's fang.

Osmumten's fang 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.

Successful hit chance

The first effect concerns the probability of landing a successful hit on an opponent, 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.

When determining if the attack lands outside the raid, two independent accuracy rolls are made and if either is higher than the opponent's 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):

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

Damage calculation

The second effect involves using a different formula to determine damage rolls; unlike other weapons that roll between zero 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 0 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.

The fang currently samples the brine sabre special attack animation. Despite the animation, it rolls against the opponent's stab defence if the attack style is set to stab.

Products

Item		Members	Skills	XP	Materials
	Osmumten's fang (or)		None	None	1 × Osmumten's fang 1 × Cursed phalanx

Item sources

For an exhaustive list of all known sources for this item, see here.

Source	Level	Quantity	Rarity
Chest (Tombs of Amascut)	N/A	1	7/24

Used in recommended equipment

Rank	Method
1	Abyssal Sire/Strategies (Melee)
1	Adamant dragon/Strategies (Melee)
2	Ancient Wyvern/Strategies (Melee)
1	Ancient Wyvern/Strategies (Prayer)
2	Basilisk Knight/Strategies (Melee)
2	Callisto/Strategies (Melee)
4	Cerberus/Strategies (Melee)
3	Chambers of Xeric/Challenge Mode (Melee)
3	Chambers of Xeric/Challenge Mode/Strategies (Tekton)
2	Chaos Elemental/Strategies (Melee)
2	Chaos Elemental/Strategies (Melee (Anti-magic))
2	Corporeal Beast/Strategies (Solo melee)
1	Corporeal Beast/Strategies (Team melee)
2	Corporeal Beast/Strategies (Fewer stat drains)
2	Corporeal Beast/Strategies (Void)
1	Corporeal Beast/Strategies (Melee masses)
2	Drake/Strategies (Melee)
1	General Graardor/Strategies (Advanced Tank)
1	General Graardor/Strategies (Solo (Melee))
1	General Graardor/Strategies (Melee Attacker)
1	Giant Mole/Strategies (Melee)
2	K'ril Tsutsaroth/Strategies (Solo Melee)
2	K'ril Tsutsaroth/Strategies (Melee attacker)
2	Metal dragons/Strategies (Melee)
2	Mithril dragon/Strategies (Melee)
2	Rune dragon/Strategies (Melee)
3	Sarachnis/Strategies (Melee)
2	Skeletal Wyvern/Strategies (Melee)
3	Skotizo/Strategies (Melee)
2	Theatre of Blood/Strategies (Melee DPS)
2	Theatre of Blood/Strategies (Freezer)
2	Theatre of Blood/Strategies (Learner)
2	Theatre of Blood/Strategies (Ranger)
2	Thermonuclear smoke devil/Strategies (Melee)
1	Tombs of Amascut/Strategies (Melee switch)
1	Tombs of Amascut/Strategies (Kephri)
1	Tombs of Amascut/Strategies (Akkha)
1	Tombs of Amascut/Strategies (Ba-Ba)
1	Ultimate Ironman Guide/Equipment
2	Vorkath/Strategies (Melee)

Changes

Date	Changes
11 January 2023 (update)	The item has been added to the Grand Exchange's item sink list.
31 October 2022	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).
1 September 2022 (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

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  Concept art of Osmumten's fang by Mod Jerv.