The bones//spirit will ask you to do a random task for these
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What is the best way to get prayer xp in the game? In RuneScape Mobile gold my opinion its Worshiping the Ectofuntus. But that's boring, has no excitement, and is time consuming. My thought suggests somthing that may be a little less time consumming and has pleasure (Hopefully its not dull!) And it has something of value for everyone. Please note my idea is really a dangerous minigame and you won't be able keep your items on death.
One of the brothers in the monastery has taken note just how many corpses are lying at the wilderness and suggests to do something about that. The brother isn't one of the bravest and asks you to collect bones in the wilderness and deliver them back to him so he could discharge the anguished soul.
I know their are many bones in the wilderness however you cant collect any old bones that the bones you have to collect possess a colored haze around them depending how hard they'll be to release the harder they are supposed to release the more experience they hands down to you. Blue is your least experience purple is a moderate quantity red is a lot and flames burning around these are the hardest. To free the souls you need to understand what is keeping them from leaving, bring them into the brother to have him do a reading on these.
The bones//spirit will ask you to do a random task for these, the tasks can vary from slaying the beast that ruined it, giving a NPC a message, coating them with a food they used to love, dyeing with them in the spot you found it (The ribs may draw one to the spot once your round the general region ), as buy OSRS gold you can see they are random jobs and are not confined to what I have recorded.