Travelling souls

Life after death was strange to say the least. Sa the future after was never certain and most came to luck.

You could be lucky and be able to reincarnate
or
You can be unlucky and have a soul too weak and just simply disappear

And then there is the third option, one that only a few get the opportunity to get.

one that involves dimension travelling and adventure, and dangers unknown to most.

And these souls are known as (think of name later)