The penance trident is two-handed. When wielded, it will attempt to 'save' the runes used in any spell. It will do this in the following way:

• The trident finds out how many different rune types you are using for your spell.
• For each rune type, the trident makes a 1 in 60 roll
• If successful, the trident will save all runes of that type

For example, an Earth Blast requires 1 Death rune, 3 Air runes, and 4 Earth runes. There is a 1 in 60 chance that, once cast, your Penance trident will do any one, two or three of these things: save 1 Death rune, 3 Air runes, or 4 Earth runes. Your Penance trident cannot save only 'some' of the runes of any rune type: for example, it will not save 1 or 2 Air runes from the above example, as it will save none or all of any rune type.

It requires 390 Barbarian Assault points in each role.