Rary's Telepathic Bond

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.

[Complete Wizard's Handbook]

School: Divination, Alteration
Level: 5
Rarity: Rare

Range: 20 yards
Components: V, S, M
Duration: 2 turns per level
Casting Time: 1 round
Area of Effect: Two or more creatures
Saving Throw: None

Material Components:
two pieces of eggshell from the eggs of two different species of egg-laying creature