Why is the material relam even important? ( reading about planes )

[AbdulAlhazred]

Sigil is like Luxembourg in the 1960's. Lots of nefarious things going on behind the scenes but you can't have an outright war there. Everyone has their operatives in place and its a good spot to get bushwhacked in a back alley but you won't be running into any primordials destroying the whole place.