Slayer is a skill that allows players to kill monsters which are often otherwise immune to damage. It can be profitable since many Slayer assignments drop valuable items such as Abyssal whips by Abyssal demons, dark bows by Dark beasts, etc. Generally, the stronger the monster, the more valuable its drops will be. Many slayer mosnters drop herbs and other useful, valuable items like runes, charms, caskets, and more, giving players an opportunity to advance difficult-to-train skills as 
Herblore and 
Summoning.
Slayer Tasks
- Main article: Slayer Tasks