One Mind of the Covens
This is a very exclusive ritual used by the Regent of a given chantry during a simultaneous communication with his equivalents across the world. He must engage in an hour-long chant and stare into a silver mirror to cast this ritual successfully. This ritual is one of the main reasons that the Tremere clan is so controlled and organized - it allows elders to demand current information concerning the progress of all its members' schemes.
errata: This ritual as written seems to be level 3, level 4 at best, and should not be so difficult to enact. Mental communication starts at level 1, after all with [Communicate with Kindred Sire]].