This spell allows the caster to inscribe a Circle of protection against harm. Before casting the spell, a visible, physical representation of the Circle must be drawn in the dirt or represented by something physical like chalk, a ribbon, or some string. This physical representation is IG and can be erased, moved, or stolen at any time before the spell is cast.
The caster must be fully within the completed Circle. This spell cannot be cast until the physrep is complete. Anyone who steps on the physrep while it is being raised will be pushed inside or outside of the Circle (player’s choice, not the caster), along with all possessions.
The physrep does not have to make a perfect circle, but if the physrep is too big, or if the ends are not almost touching, then the spell is blown.
A Circle of Power stretches up to 6' (2m) in radius and 10' (3m) tall and is a cylindrical dome with a flat bottom. The Circle has about the same amount of friction as a normal wall or floor, although objects and creatures cannot lean against, rest against, or be placed on top of the Circle.
Larger Circles can be made by having multiple spell casters casting the spell simultaneously. For example, a Circle up to 12' (3.7m) radius and up to 20' (6m) height may be made by two casters. The casters must say the incant at the exact same time for this to be effective. For each caster add an additional 6’ (2m) to the radius and 10’(3m) to the height.
It is possible to surround a Circle with a larger Circle, but a smaller Circle cannot be placed inside an already existing Circle. A Circle inside of another Circle is considered its own space; you are not considered to be inside the exterior circle.
Nothing may enter or leave the Circle once it is cast, including spells, thrown gasses, Weapons and creatures. Traps placed near the Circle will not affect anyone or anything inside; similarly, traps within the Circle will not affect anyone outside the Circle.
Spells may be cast within the Circle but cannot be thrown through the Circle. Air may pass through, but other gasses may not.
A gaze or voice attack can be effective through a Circle of Power. Creatures inside a Circle are still considered inside Line of Sight.
The spell lasts for one hour but may be terminated by the caster at any time if they touch the Circle and state “circle down.” If there is more than one caster in a larger Circle, any one of them may drop the Circle. The statement “circle down” is OOG, although any observers who hear the statement are aware that the Circle was terminated, and they might know who terminated it.
The Circle will also terminate if the caster leaves the Circle magically or is Dead (needing a Life spell). If there is more than one caster, the Circle will remain up until all the casters leave or die.
The Circle is not affected by a Dispel.
This spell can also be used to create a Circle that can be used for the casting of a Formal Magic ritual. If a ritual is started within one minute of the Circle being cast, the duration of the Circle of Power is extended to one hour and one minute.