I feel like communion magiq is an art of it’s own, but I think it also is used in conjunction with other magics. It can be used to bring a group of healers together to cure difficult diseases, to cast an aura of joy over a camp through group song and dance, to teach a young one the joys of changing form. It is beautiful because it reminds us that while we are all our own people, it shows us the greatness of the many and how much more we can accomplish together.
EDIT: This only works with unity of purpose. If the group cannot agree on what is being accomplished it won’t work. Communion magic at its heart is not about forcing your will on others, but joining together to accomplish what can’t be done alone.