The character must make a ranged touch attack to hit the target. Any creature or object struck is covered with a field that completely blocks bodily extradimensional travel. Forms of movement barred by the dimensional anchor include astral projection, blink, dimension door, ethereal jaunt, etherealness, gate, maze, plane shift, shadow walk, teleport, and similar spell-like or psionic abilities. It prevents the use of a gate or teleportation circle for the duration of the spell.
The dimensional anchor does not interfere with the movement of creatures already in ethereal or astral form when the spell is cast, nor does it block extradimensional perception or attack forms. Also, it does not prevent summoned creatures from disappearing at the end of a summoning spell.