Through this spell, an ultra-dimensional connection is temporarily created between the plane the caster is on and a different plane chosen by him. The portal is a shimmering disc of force 10 Ft across, floating on edge up to 15 Ft from the caster, wherever he wills it. It is held open without concentration until the caster Wills it to vanish or the spell's duration expires. Anything caught between planes, when it is dispelled, is flung into the uppermost plane of Limbo. Up to 10 creatures can pass through the portal in a given turn (1 per segment), assuming that they race through in an organized line, one right on the heels of the other. Objects not in contact with a creature are also sent to the uppermost plane of Limbo, and scattered there randomly.
If the destination plane is personally known to the caster, no material component is needed. The chance of successfully reaching the requested plane is 5% per level of the caster. Failure indicates an opening into an alternate Prime Material Plane. Unknown planes can be reached if the caster is in physical contact with material from that plane. The material is not consumed and can be brought along if it is possible. If the material component is missing the caster must provide a verbal description of the plane desired even if it is only from his imagination, then there is only a 10% base chance of reaching the correct plane. Add + 1% for each level of the spell-caster.