Talk:Omega/@comment-45751485-20200710181008/@comment-99.232.106.176-20200914193543

She created the sanctuary for two purposes,

1.) Stay hidden from the world because witches were now being hunted.

2.) experiment to achieve immortality.

She was doing experiements to achieve immortality so she could go on forever gaining the knowledge of the world. Her experiments failed to give her immortality but she learned how to transfer souls from one vessel to another also how to compress its contents.

From what we gather, the sanctuary exists in between realms (like limbo) and Echidna's soul uses it as a seguay to commune between life and death. Im sure she used those abilities to transfer the souls of the other witches once she left the santuary as Omega.