This extract was taken from the homepage of Magicduel

~ Technique description, Part 1 ~

When joined together in a group the memeber's identity drops and that of the group increases, becoming one sole identity. Usually, a leader shows up that compensates this identity dissorder. But, if none of the memebers of the group doesn't have the necessary qualities to become a leader, A group spirit appeares.

This is an except from a Spell Document. Spell Documents are part of Inner Magic which is currently partially implemented.