I don't know how to describe this leader skill. This is a bug, please report it. (up_type: 1, type: 110)
If there are only Cool idols on the team: Raises the Dance appeal of all cards by 100%, and the Visual appeal of all cards by 100% (when playing a Cool-type song).
If there are only Passion idols on the team: Raises the Vocal appeal of all cards by 100%, and the Dance appeal of all cards by 100% (when playing a Passion-type song).
If the team has at least 5 different skill types: Allows active skill effects to stack, but only the Dance appeal of the team applies during the live.