Oddball is an aura available as part of the Members Loyalty Programme and can be purchased from Xuan in Burthorpe or Varrock, for 2,000 Membership Loyalty Points. On 27 January 2014 this effect was made a toggle and can be turned on and off at any time.

Upon its release, it was on sale for 400 points instead of 2,000. On the third release of the loyalty shop, it was put on special again for 1000 points. When activated, it turns ammo for the dwarf multicannon into oddball items, such as beer, squids and brains.

Unlike most auras, it is not found in the Aura management interface and is instead an item that is equipped in the aura slot.