Kiri's Dimensional Teleport
(Alteration)

Range:  0
Components:  V, S, M
Duration:  Instantaneous
Casting Time:  1 round
Area of Effect:  One person touched per 3 levels
Saving Throw:  None

Upon casting this spell, the caster and 1 person per 3 levels of the caster who are in physical contact with the caster, all of their equipment and 69kg (150 pounds) per level, are instantly transported anywhere in the AD&D multiverse that the wizard wants. An unlimited number of dimensional barriers can be crossed (eg.: prime material plane to 666th level of the Abyss) in one casting. The time taken is approximately 5 seconds per barrier crossed. Places that are specifically warded against dimensional travel due to magic or godly presences cannot be reached unless the power wills it so. The travellers in this case will arrive outside of the warded area. So, no, you cannot teleport your party of Paladins into Demogorgon's palace, but you can get to his plane more easily.
The caster can choose a general or specific location if one is known, otherwise the point of entry into the plane is random (the travellers will always end up in a safe place though).
People touched in the casting receive no saving throw versus this spell.
The material component is a page of dimensional formula (which requires a 17 or higher Intelligence to create, but since you are casting 9th-level spells, you have at least 18 Intelligence anyway) that is consumed in the casting.

