The experience rates and costs vary for different prayer training methods. Using the Gilded Altar with dragon bones or wyvern bones provides the fastest XP rates but can be expensive. The Chaos Altar in the Wilderness offers similar XP rates with a lower cost as there’s a 50% chance that the bone won’t be consumed. Reanimating Ensouled Heads provides different XP rates depending on the type of head used and the player’s combat levels.