20% bonus
According to official sources, the chaotic staff only provides a 15% damage bonus. It also has a stab bonus of +13, making the current picture fairly suspicious. Reverting to the 15% statement, as well as removing the picture, until this issue is resolved. --Chaines51 04:09, May 25, 2010 (UTC)
After doing some more research, it seems that the chaotic staff does in fact have a +20% magic strength bonus. Whether or not this was always the case, or a hidden update by JaGeX is currently unknown. --Chaines51 13:28, May 25, 2010 (UTC)
I looked at the Knowledge Database and it still says +15%? Is this an error? (98.226.241.30 18:22, June 10, 2010 (UTC))