This spell is a cleric of Reorx's supplication for protection against
injury. Its effects are similar to the spells sanctuary and shroud, which are
used by most other clerics. Shelter of the earth, sanctuary, and shroud may
never be placed on the same person at the same time. A cleric may only cast
shelter of the earth upon themselves.
Shelter of the earth also makes the cleric immune to earth-type damages.
See also: 'help sanctuary'