Requiem Interop

[Asteroid4]

Describe the feature

Requiem and Hexcasting seem to work well together already, but there's no interop between them. I'm not entirely sure what spells should be added, as Requiem already provides good solutions to the problems it makes, but there are a lot of potential actions that could be added. For example, checking a player's attrition level, checking what a player is possessing (NULL if incorporeal), or if a given entity has its soul.

Additional context

No response