I'm trying to identify fantasy book series I encountered some time ago. Here are things I remember:
- it was a fantasy setting but with some s-f elements; with many worlds and possibility to travel between them; resembling Planescape setting a little,
- the two main races were non-human and probably hostile to each other,
- a labyrinth (?), which somehow played an important role in the plot,
- a protagonist was some kind of emissary and was sent on a mission to another worlds
- time period: 80s - 90s
Does anyone know what it is the name of the series?