Complete Wizard's Handbook Version[]
With this spell, the caster forms a telepathic bond between two or more creatures with Intelligence of 6 or higher. The bond can be established only between willing creatures who are within 20 yards of each other. The creatures need not speak the same language to communicate via the bond. The bond can be placed upon one creature for every three levels of the caster; therefore, a 9th-level caster can forge a bond among three creatures. The bonded creatures can remain in mental contact as long as they remain on the same plane of existence. If either creature enters a different plane, the spell is terminated.
Rary's telepathic bond can be cast only once to affect a single pair of subjects. However, if the caster is able to cast the spell twice, the same subjects can be affected again. Example: A wizard can cast telepathic bond twice. The first casting links Subject A to Subject B. The second casting can affect Subject A again, linking him with Subject C.
The material components for this spell are two pieces of eggshell; the pieces must be from the eggs of two different species of egg-laying creature.
Wizard's Spell Compendium Version[]
With this spell, the wizard can forge a telepathic bond between two or more creatures with an Intelligence of 6 or higher. The bond can be established only between willing creatures. The creatures involved need not all speak the same language to communicate via the bond. The telepathic bond can be placed upon one creature for every three levels of the caster, so a 16th-level wizard can forge a telepathic link among five creatures.
Once the bond is formed, the creatures can stay in contact only if they remain on the same plane. No special power or influence is conferred by establishing the bond. A permanency spell cannot make a telepathic bond permanent. A wish spell can, but no more than two creatures can be permanently bonded together in this way.
The material components are a piece of a shell from the eggs of two species of egg-laying creatures.
Notes: Uncommon or rare spell (WoG). A marginally different version appears in The Complete Wizard's Handbook. This is the preferred form.