This article is about the magic spell. For the special attack, see Darklight#Special attack.

Weaken is a level 11 Magic spell. When cast on an opponent, their strength is reduced by 5%. The spell gives experience whether it hits or misses, making it a popular way to gain experience cheaply. The spell can only be cast if his stats haven't already been lowered, meaning you can not stack stat reduction with multiple spells in a row.


Spell cost
3Water rune2Earth rune1Body rune30
Combo runes
3Water rune1Body rune2Dust rune28
1Body rune3Mud rune902
3Water rune1Body rune2Lava rune28
2Earth rune1Body rune3Steam rune222
2Earth rune1Body rune3Mist rune354
2Earth rune1Body runeStaff of water15
3Water rune1Body runeStaff of earth20
2Earth rune1Body runeMist battlestaff15
2Earth rune1Body runeKodai wand15
3Water rune1Body runeDust battlestaff20
1Body runeMud battlestaff5
3Water rune1Body runeLava battlestaff20
2Earth rune1Body runeSteam battlestaff15

Failed Cursing

Main article: Splashing

Casting Weaken while wearing full metal armour (including an elemental staff with no more than +10 magic points) can give a magic attack as low as -65, which guarantees a "splash," or a missed hit. This provides very cheap Magic experience, as players can instantly recast the spell on the same target. Additionally, casting Weaken grants players no experience in the Hitpoints skill and, thus, is useful to pures.

The usual method is to buy the Body runes needed for the cast, as well as an appropriate amount of one of the other two runes, and using the respective staff of the third rune. An expensive alternative is to buy a Mud battlestaff, which provides an unlimited supply of both Water and Earth runes.

When doing this method, it is helpful to position a monster so that it is just on the edge of your screen, so that there is minimal distance between it and your spellbook.

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