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Dvati

Dvati requires two creatures speaking simultaneously. One twin provides a description of actions, while the other supplies words and descriptions of things. The two weave together to communicate in a uniquely dvati manner. Other creatures can speak this tongue, but two Dvati-speaking creatures must work together. Otherwise, communication via this language is impossible.

Races speaking this language

Race name Rulebook name Edition
Dvati Dragon Compendium Supplementals (3.5)