This highly specialized and rarely-granted spell is available only to priests of the Celtic deity Belenus who have attained 10th level. It is granted but once per year, and is the most important spell in the dedication of a circle of standing stones (see special section). The casting of the spell requires an entire week. Any interruption negates its effects, and the priest must start over. A priest using this spell has one year to create a circle of stones. Failure to do so means the patron deity takes back this (and all the priest's other spells), never again to be bestowed. (Theoretically, in an extraordinary case of exceptional service, a disgraced priest might be reinstated, but there is no evidence this has ever happened.)
The deity allows only one attempt to construct a circle of standing stones each year.
The material component is a small stone quarried from the same place as the stones used in the circle. It must be collected after the stones have been placed in position.
Notes: Granted by the Celtic god Belenus, a sun god and patron of druids. (In campaigns not using a traditional Celtic pantheon, the local equivalent might be substituted by the DM.)
Standing Stones
The purpose of a circle of standing stones is to intensify the effect of druidic magic and to create a center of magical power. The site is dedicated to one sphere of magic available to druids (for example, standing stones-divination), and once completed, the site functions permanently unless extraordinary means are taken to destroy it
Once the circle is created, ceremonies can take place at the site to cast spells of the appropriate sphere. The total number of levels of participating druids can be used as a multiplier upon any of the following: range, duration, or area of effect Thus, if 50 levels of druids are conducting a ceremony to cast an animate object spell, then they could either multiply the range by 50 (to 1500 yards), multiply the duration by 50 (to 50 rounds per level of the caster), or multiply the area of effect by 50 (to 50 cubic feet per level). One of the priests must actually cast the spell, and that priest's level provides the basis from which all other spell information is derived.
The creation of a standing stones site is a lengthy process. The site must have the stones available and be at least 5 miles from any other standing stones. At least 50 levels of priests, (worshipping at least four different Celtic gods) are required. One must be a 10th level priest of Belenus able to cast the enchant stones spell. All of the priests must spend an entire month assembling the stones and attending ceremonies. The enchant stones spell must be cast at the end of each week and again at the end of the construction. If the priests are interrupted in any way during this time, the enchantment fails and they must start again.
The exact size and number of stones may vary; it is only important that they be arranged in a series of circular patterns. A typical site is 10 to 30 meters across, and its stones are arranged to follow the seasons, stars, constellations, suns, moons or similar celestial patterns.