Shrines and Power Conjunctions (EAFW)

Across the vast expanse of Athas there are a few places known to be singularly conductive for clerics and druids. These places are either naturally occurring deposits, rich in the raw material of the elements or paraelements, or specially prepared locations built by a cleric using a create shrine spell.
These sites are highly prized by their creators and those who have chosen to champion them. Any visitors of evil intent should be wary, for priests on the sites of shrines and power conjunctions are conduits of enormous power.
The shrines of the elements and paraelements are created by clerics over a period of months and sometimes even years. They are built to last forever, and only the disastrous incursion of another element, or sometimes a defiler, can destroy them. Only elemental and paraelemental clerics may build or gain benefits from shrines.
The shrines are well known to the people who live near them, though their true purpose is often something of a mystery. The Ahpotex tribe in the Ringing Mountains is well acquainted with Alicious Strax and can be found hunting alongside her in their swift cliff gliders, but they have no idea what the priest expects from them in return.
In truth, the priests who live dwell in shrines wish only to protect it and the area that surrounds it from destruction. These rare spots are the delicacies of their ethereal masters, much like elves are for thri-kreen.
The clerics of the shrines tend to perpetuate a mystical image, and they usually try to avoid too much contact with their neighbors lest they be seen as commonplace. This feeds some egos, but it also makes better listeners of the tribesmen and villagers when the guardian chooses to speak.
Eight typical shrines are detailed here, one for each of the elements and paraelements. Clerics of a particular sphere should visit a shrine once every few years to commune with the spirits that empower them and develop a deeper appreciation for the goals of their masters, but there is nothing in any pact that requires them to make this journey.
Clerics of the same sphere will never fight while at a shrine, regardless of personal differences. If an attack does occur, for any reason, the elementals will instantly revoke the attacker's powers and ignore him for the usual 1-6 day period. If the attacker's spell was from the sphere of the shrine, it will have no effect on clerics of like nature.
A cleric is always considered to be in conjunction when visiting a shrine to his patron.
Clerics at a shrine gain a number of "phantom hit points that can be used to absorb damage from any spell of defiling magic. These "phantom hit points' are equal to the character's level, multiplied by 5. A 12th-level cleric at a shrine of his master will have 60 hit points. Normal and magical weapons, preserver spells, and clerical spells of other spheres all have normal effects on the cleric. When defiling magic has exhausted the supply of "phantom hit points," the cleric begins to take damage normally.
Finally, priests are immune to spells from the sphere of the element protected by the shrine. Spells that don't specifically target the character will have no effect if they would indirectly damage the cleric, the shrine, or the element itself.