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

Weaken icon










1Body rune2Earth rune3Water rune


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 rune32
Combo runes
3Water rune1Body rune2Dust rune30
1Body rune3Mud rune598
3Water rune1Body rune2Lava rune30
2Earth rune1Body rune3Steam rune257
2Earth rune1Body rune3Mist rune194
2Earth rune1Body runeStaff of water17
3Water rune1Body runeStaff of earth22
2Earth rune1Body runeMist battlestaff17
2Earth rune1Body runeKodai wand17
3Water rune1Body runeDust battlestaff22
1Body runeMud battlestaff7
3Water rune1Body runeLava battlestaff22
2Earth rune1Body runeSteam battlestaff17

Failed CursingEdit

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.