An invisible barrier surrounds the character and moves with the character. The space within this barrier is impervious to most magical effects, including spells, spell-like abilities, and supernatural abilities. Likewise, it prevents the functioning of any magic items or spells within its confines.

An antimagic field suppresses any spell or magical effect used within, brought into, or cast into the area, but does not dispel it. Time spent within an antimagic field counts against the suppressed spell's duration.

Golems and other magical constructs, elementals, outsiders, and corporeal undead, still function in an antimagic area (though the antimagic area suppresses their supernatural, spell-like, and spell abilities normally). If such creatures are summoned or conjured, however, see below.

Summoned or conjured creatures of any type and incorporeal undead wink out if they enter an antimagic field. They reappear in the same spot once the field goes away. Time spent winked out counts normally against the duration of the conjuration that's maintaining the creature. If the character casts antimagic field in an area occupied by a conjured creature who has spell resistance, the character must make a caster level check (1d20 + caster level) against the creature's SR to make it wink out. (The effects of instantaneous conjurations, such as create water, are not affected by the antimagic field because the conjuration itself is no longer in effect, only its result.)

Normal creatures can enter the area, as can normal missiles. The spell has no effect on constructs that are imbued with magic during their creation process and are thereafter self-supporting (unless they have been summoned, in which case they are treated like any other summoned creatures). Undead and outsiders are likewise unaffected unless summoned. These creatures' spell-like or supernatural abilities, however, may be temporarily nullified by the field.

Dispel magic does not remove the field. Two or more antimagic fields sharing any of the same space have no effect on each other. Certain spells, such as wall of force, prismatic sphere, and prismatic wall remain unaffected by antimagic field (see the individual spell descriptions). Artifacts and creatures of demigod or higher status are unaffected by mortal magic such as this.

Note: Should the character be larger than the area enclosed by the barrier, any part of the character's person that lies outside the barrier is unaffected by the field.