Talk:Salem Chapter Release/@comment-33555750-20171129192751/@comment-28209103-20171130015635

the original Grand Servant summoning system only have 7 container which is the 7 proper class.

the later Servant system like Fuyuki only copied that but as Einzbern showed us magus are capable of making a whole new container...

At the very least FATE system are fully equipped with the container for Alter Ego and Moon Cancer.. albeit it maybe BB who tinker and modified the system to accomodate Alter Ego and her