When this spell is used, the wizard instantly transports himself, along with a
certain amount of additional weight that is on or being touched by the
spellcaster, to a well-known destination. Distance is not a factor, but interplanar
travel is not possible by means of a teleport spell. The spellcaster is able to teleport a maximum weight of 250 pounds,
plus an additional 150 pounds for each level of experience above the 10th (a
13th-level wizard can teleport up to 700 pounds). If the destination area is very
familiar to the wizard (he has a clear mental picture due to previous proximity
to and study of the area), it is unlikely that there is any error in arriving,
although the caster has no control over his facing upon arrival. Lesser known
areas (those seen only magically or from a distance) increase the probability of
error. Unfamiliar areas present considerable peril (see table).

Teleporting high means the wizard arrives 10 feet above the ground for every
1% he is below the lowest “On Target” probability; this could be as high as 320
feet if the destination area was never seen. Any low result means the instant
death of the wizard if the area into which he teleports is solid. A wizard
cannot teleport to an area of empty space–a substantial surface must be there,
whether a wooden floor, a stone floor, natural ground, etc. Areas of strong
physical or magical energies may make teleportation more hazardous or even impossible.