|Release date||24 May 2001 (Update)|
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Weaken is a level 11 spell that requires a body rune. It reduces the target's damage dealt by 5% for 1 minute.
Monsters such as elemental wizards, dark wizards and catablepons are mystical in nature, and are capable of casting Weaken upon players. This effect does not wear off even if you are logged off, however it will wear off within minutes at most if you stay logged in.