All four kinds of elemental command rings are very powerful. Each appears to be nothing more than a lesser magic ring until fully activated (by meeting a special condition, such as single-handedly slaying an elemental of the appropriate type or exposure to a sacred material of the appropriate element), but each has certain other powers as well as the following common properties.
Elementals of the plane to which the ring is attuned can’t attack the wearer, or even approach within 5 feet of him. If the wearer desires, he may forego this protection and instead attempt to charm the elemental (as charm monster, Will DC 17 negates). If the charm attempt fails, however, absolute protection is lost and no further attempt at charming can be made.
Creatures from the plane to which the ring is attuned who attack the wearer take a -1 penalty on their attack rolls. The ring wearer makes applicable saving throws from the extraplanar creature’s attacks with a +2 resistance bonus. He gains a +4 morale bonus on all attack rolls against such creatures. Any weapon he uses bypasses the damage reduction of such creatures, regardless of any qualities the weapon may or may not have.
The wearer of the ring is able to converse with creatures from the plane to which his ring is attuned. These creatures recognize that he wears the ring. They show a healthy respect for the wearer if alignments are similar. If alignments are opposed, creatures fear the wearer if he is strong. If he is weak, they hate and desire to slay him.

The possessor of a ring of elemental command (earth) takes a -2 saving throw penalty against air- or electricity-based effects.

In addition to the powers described above, the ring gives its wearer the following abilities.

• Meld into stone (unlimited use, wearer only)
• Soften earth and stone (unlimited use)
• Stone shape (twice per day)
• Stoneskin (once per week, wearer only)
• Passwall (twice per week)
• Wall of stone (once per day)

The ring appears to be a ring of meld into stone until the established condition is met. It must be reactivated each time a new wearer acquires it.

Prerequisites: Forge Ring, summon monster VI, meld into stone, soften earth and stone, stone shape, stoneskin, passwall, wall of stone.
Cost to Create: 100,000 gp, 8000 XP, 200 days.