Abyssal demon - The RuneScape Wiki

Abyssal demons are a type of demon players encounter as part of the Slayer skill and the weakest of the Abyssal Slayer creatures. They require a Slayer level of 85 in order to be harmed. They are famous for their unique drops of the abyssal whip, the abyssal wand, and the abyssal orb, which can only be received from abyssal demons. They are commonly fought for combat and Invention experience, as well as their unique and common drops. They have a special effect of short-range teleporting either themselves or the player they are battling on occasion.

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We spent 3 hours getting an abyssal demon to Priffdinas. It lived for a good 8 minutes after arriving. : r/runescape