Book of equilibrium

The Book of Equilibrium was released alongside "The Void Stares Back". It gives the player 50,000 experience to any combat skill above 75. It can be banked for later use.

The book can be used on any of the following skills:


 * Attack
 * Strength
 * Defence
 * Magic
 * Ranged
 * Summoning
 * Prayer

Note: It is strongly recommended to use the books on Prayer or Summoning.

The table below shows the money saved by using the book on Prayer XP.

If one would be to use the book on summoning, they would therefore eventually spend the amount of money they would have saved on prayer. For example, if the player is hesitating between using the book in prayer or on summoning, here is an analysis:


 * Say the player puts it in summoning, receiving 50,000 summoning xp:
 * They would have to spend an extra coins to gain the 50,000 prayer xp they missed out on, giving a cost per xp (for summoning) of.
 * Say the player puts the book in prayer, receiving 50,000 prayer xp:
 * They would have to find enough charms to gain the 50,000 summoning xp they missed out on

Therefore, when using the book, the real choices are to either receive about 1 million coins per book or 50,000 summoning xp.