Arcane prayer scrolls are a possible reward from the Chambers of Xeric. Reading it allows the player to unlock the prayer Augury.
A player reading the prayer scroll.
When the player reads the scroll, the chatbox message states You can make out some faded words on the ancient parchment. It appears to be an archaic invocation of the gods! Would you like to absorb its power? (Warning: This will consume the scroll.)
If a player reads the scroll while already having unlocked the prayer, the chatbox message will state You can make out some faded words on the ancient parchment. It appears to be an archaic invocation of the gods. However there's nothing more for you to learn.
|26 January 2017 (update)
||The arcane prayer scroll was made separate from dexterous prayer scroll that would unlock Rigour so that the cost of Augury would not be tied to the much higher cost to unlock Rigour. This update also made both scrolls twice as common.
|9 February 2017 (update)
||The dexterous and arcane scrolls were further made twice as common.