The bone staff is a powered staff requiring level 50 Magic to wield. It is made by combining a battlestaff with Scurrius' spine alongside 1,000 chaos runes, requiring a chisel and level 35 Crafting to do so; players without the required level can alternatively pay Historian Aldo 50,000 coins to create it on their behalf. The chaos runes are not consumed but are used to give the bone staff an initial 1,000 charges.
In order to use the staff's magic spell, it must be charged with chaos runes, holding up to 20,000 charges when fully charged. Each cast requires one chaos rune, costing 106 coins. Uncharging the staff returns all remaining runes back. Additionally, unlike other powered staves, the bone staff's built-in spell gives 35 base Magic experience on a successful hit.
As a rat bone weapon, it is effective against all types of rats by adding 10 damage to the player's maximum hit.[1] The staff cannot be used against any other type of monster (including manual cast spells); doing so will yield the game message You can only use this weapon against rats. Additionally, this weapon has no attack cooldown when attacking the giant rats that Scurrius summons.
The bone staff no longer gives experience when splashing, as players were able to splash on the giant rats summoned by Scurrius for incredibly fast experience rates due to the lack of attack cooldown.
Trivia
The rat bone weapons were based on a suggestion by a user named N1nja_P1g, and was credited by Mod Jerv for the suggestion that inspired the in-game designs.[2]
References
^Jagex. Mod Ash's Twitter account. 5 February 2024. Archived from the original on 5 February 2024. Mod Ash: "Looks like a static +10 in the code, from what I can see."
^Jagex. Mod Jerv's Twitter account. 24 January 2024. Archived from the original on 2 February 2023. Mod Jerv: "I would like to shout out @N1nja_P1g for the awesome player suggestions that helped inspire the final designs. Especially the addition of stinky cheese and the mace!"