A prayer enhance (+) is a potion that restores the player's prayer points over the course of 4 minutes and 50 seconds. One prayer point is restored per 6 game ticks.
It can be made with 78 Herblore by using a buchu leaf with a water-filled gourd vial while having a cicely in the inventory. Making this potion gives 26.5 herblore experience.
This potion is the strong variant of the prayer enhance potions, and cannot be taken out of the Chambers of Xeric.
For an exhaustive list of all known sources for this item, see here
|28 May 2020
(update | poll)
The value was changed from 2 to 40 so that they are more likely to appear on top of the loot pile alongside raid supplies and bones.