You cant have the same spirit per team on the same 'area', the same spirit can co-exist if they are very far away from each other, but the effect is useless, just larger area.
If you try to make 2 of the same spirits in a small area one spirit will die and one will remain. This was done to stop those damn spirit spammers in halls. You can have your whole team make the same spirit but in the end only one will remain, because only one spirit of the smae type is allowed in the same area.