Tanzanite mutagen

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Tanzanite mutagen
Tanzanite mutagen.png
Released30 April 2015 (Update)
MembersYes
Quest itemNo
Properties
TradeableNo
EquipableNo
StackableNo
DestroyDrop
ExamineTriggers mutation in a serpentine helm.
Values
Value9,500 coins
High alch5,700 coins
Low alch3,800 coins
Weight0.05 kg
Advanced data
Item ID13200
Tanzanite mutagen detail.png

A tanzanite mutagen is an untradeable item dropped by Zulrah. It allows a player to cosmetically recolour their serpentine helm to a turquoise coloured tanzanite helm. The mutagen is consumed upon use.

Item sources[edit | edit source]

For an exhaustive list of all known sources for this item, see here (include RDT).
SourceLevelQuantityRarity
Zulrah725 Multicombat.png12 × 1/13,106

Drop rate[edit | edit source]

The drop rate for this item is calculated from three different rolls: the chance of missing the unique drop table (255/256), the chance of rolling Zulrah's flax table (10/248) and the chance of rolling the mutagen table (20/5,264). Both mutagens are equally likely.[1]

Thus, multiplying these three fractions will result in ~1/6,553, which is the chance of either mutagen per roll, or a ~1/13,106 chance for a specific mutagen. However, since Zulrah gives two rolls to its drop table per kill, the chances are roughly doubled, giving a ~1/3,277 chance for any mutagen or a ~1/6,553 chance for a specific mutagen.

Changes[edit | edit source]

Date Changes
25 July 2019
(update)

The drop rate was slightly increased from ~1/6,580 due to crystal weapon seeds being removed from Zulrah's drop table.

22 November 2018
(update)

The drop rate was slightly lowered from 1/6,553.9 as crushed nests were removed from Zulrah's drop table, due to changes in how the drops were rolled.

References[edit | edit source]

  1. Note: The cited 10/249 number was changed to 10/248 following the removal of crystal weapon seeds from Zulrah's drop table.
    Jagex. Mod Wolf's Twitter account. 30 March 2019. (Archived from the original on 29 May 2020.)