Side-quest example: When you've completed all of your free quests, you have the lowest level of prayer . It is very difficult to RS gold obtain massive bones due to other players. The Monastery will have a monk who will help you.
He offers you a random prayer side-quest like to purify the water around the castle of the white knights. You will need a variety of ingredients from various places like the mystical cabage located in Draynor's Mansion Garden. When the purifier is done it is time to OSRS buy gold add it to the river around the white knights castle. There will be a lot of exp in your prayer skill after you've completed the side-quest. For every four hours you are only able to return to the side-quest.