LYCOS RETRIEVER 
Prayer: Prayer Experience
built 247 days ago
After completing the Nature Spirit quest, players can kill ghasts and earn prayer experience. You will need a blessed Silver sickle and about 3 or 4 druid pouchs. Ghasts are not corporeal until you use the druid pouch on them, which is why an empty druid pouch will not work. Ghasts can be found in Mort'ton and Mort Myre swamp. Killing a ghast earns 30 prayer experience.
Source:
After completing the Ghosts Ahoy Quest, Ectofuntus can be used to gain more Ecto-tokens and Prayer experience. Ecto-Tokens can be used for many things inside Port Phasmatys, and you'll receive experience for worshipping the Ectofuntus. The Prayer experience earned for worshipping the Ectofuntus is four times the normal experience received when just burying them.
Source:
[One] way to train prayer is to do Funeral Pyres, which is an unique method involving burning remains to free the spirit from the earthly world. For doing this, you gain prayer and firemaking experience.
Source:
After completing the Shades of Mort'ton quest, players will then be able to to cremate Shades to earn some prayer experience as well as some rewards. To learn more, see Shades of Mort'ton (minigame).
Source:
MORE ABOUT
Prayer Experience