Dimensional Lock

Tome and Blood: A Guidebook to Wizards and Sorcerers (TB)Updated Supplementals (3.0)

Dimensional Lock is a D&D 3.5 spell (Abjuration) from TB. On class lists for Cleric (Level 8), Sorcerer (Level 8), Wizard (Level 8), and others. Range or area: Medium (100 ft. + 10 ft./level); Saving throw: None; Duration: 1 day/level; Casting time: 1 standard action.

School
Abjuration
Casting Time
1 standard action
Components
V, S
Range
Medium (100 ft. + 10 ft./level)
Area
15 ft. radius emanation centered on a point in space
Duration
1 day/level
Saving Throw
None
Spell Resistance
Yes

You create a shimmering emerald field that completely blocks physical extradimensional travel.
Forms of movement barred include astral projection, blink,
dimension door, ethereal jaunt, etherealness, gate,maze, phasing,
plane shift, shadow walk, teleport, and similar spell-like and psionic abilities.
Once the spell is in place, extradimensional travel into or out of the affected area is not possible.
The dimensional lock 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 such as a basilisk’s gaze.
It also does not prevent summoned creatures from disappearing at the end of a summoning spell.