The Clerics Ruby
A special ruby amulet that can be charged with healing energy for future use. The cleric that charges it will be able to cast onto it as many healing spells that they are allowed in a 12 hour period.
Only one caster can charge it. To activate it the player must grasp it tightly. After every healing spell is used it must be recharged in order to be used again. It can only be recharged once all other charges are exhausted.