Penance horn

The Penance horn can be obtained for free from Commander Connad at the Barbarian Assault minigame (no Barbarian Assault points are required to acquire the horn which comes uncharged). The item gives bonus experience to Agility, Mining and Firemaking. The bonus experience can be claimed by checking the horn, then selecting a skill.

To begin charging the horn, the player should enter any waiting room and rotate the statue located in the northern part of the room. After rotating, the horn will gain charges as the player plays the minigame, but no honour points will be earned. Thus, the player cannot charge the horn and gain honour points at the same time. The horn does not need to be taken in to the minigame to obtain charges.

If the player dies with the horn, Commander Connad will give it back for free and with the same amount of charges it had before it was lost.

11 cycles and 7 extra waves are needed to charge the horn fully if a player does waves 1-10. However, some players prefer to do waves 1-5, which fills the horn after 36 cycles.

The bonus from the penance horn used to stack with other exp-boosting items, however that is no longer possible, because of the bonus exp system-update.

Agility
Before the mentioned update, the XP reward could be spent by completing agility courses, excluding the Werewolf Skullball, Agility Pyramid and the Penguin agility courses. When doing the Dorgesh-Kaan agility course, the horn used to only affect the exp gained from obstacles, not the bonus from Turgall. Around 1,400,000 experience will be gained from a full horn at level 99.

Firemaking
Players will receive double experience for lighting logs while using the penance horn. The experience gained from lighting beacons is not affected. The experience from burning pyre logs in the Shades of Mort'ton minigame is also not doubled. The Ring of fire or Flame gloves bonus does apply to the extra XP given by the horn. In other words, the total experience rate is x2.02 or x2.05 with one or both (of the ring of fire/flame gloves) equipped, respectively.

Without the Ring of fire or Flame gloves bonus around 3,500,000 experience will be gained from a full horn, but with the Ring of fire and Flame gloves bonus around 3,560,000 experience will be gained from a full horn.

Stages
The completion of any wave fills your horn by exp based on the point total for that round, averaging around 100 waves, or 10 rounds of all 10 waves, for a full horn. It's widely debated whether doing the entire 10 waves ten times is faster to fill the horn - it's also possible to fill the horn by simply doing wave one 100 times, since the bonus for doing higher waves may or may not apply to obtaining potential. Doing waves 1-5 is recommended if using this method.

As of 11/04/2012 the horn has been updated to display a percentage of potential. Please submit data on the talk page.