These are going to need a prayer level of 10 to 27 to do, plus they are going to boost you around the 10% mark.
Rock Skin is a better form of Thick Skin; this requires a prayer level of 10. It will drain at one point every six seconds. It will give a defense boost of 10%.
Superhuman Strength is a better form of Burst of Strength; it requires a prayer level of 13. It will drain at a point every six seconds and increase the gamer’s strength by 10%.
Improved Reflexes is a better form of Clarity of Thought, this prayer needs a skill level of 16. It will drain at a point every six seconds and it will buff up the attack skill by 10%.
Rapid Restore has no restrictions and can be used with any of the prayers. It requires a prayer level of 19, drains at a point every 26 seconds, and it will double the restore rate of all your skills (other than Summoning, Prayer, and Hitpoints).
Rapid Heal has no restrictions for use and can be done with other prayers. It will require a prayer skill level of 22, it drains at a point every 18 seconds, and it will double the restore rate for your hitpoints only.
Protect Items has no restrictions on use and it can be used with other prayers. It requires a prayer skill level of 25 and drains at a point every 18 seconds. It will let the character upon death retain an extra item.
Hawk Eye will need a skill level of 26 to use. It will drain at a point every six seconds and it will boost the ranged skill of the player by 10%.
Mystic Lore needs a skill level of 27 to use. It will drain at a point every six seconds. Use to boost your magic skill by 10%.