[Shovah32]

The skullface item is a monster on assasins, if you can afford it try a succubus with:
bottle of living water, soul contract, skullface, some armour/shield if you need/can afford it.
She gets a nice water elemental to start with, gets free imps every turn AND can cast raise skeletons.

I thought sabbath slave/master worked like communion:
+1 for 2 slaves
+2 for 4 slaves
+3 for 8 slaves
+4 for 16 slaves
maybe +5 for 32, dont know how far it goes

As said, pale ones have lots of hp. They also: are amphibious, have great national spells (all era's), have siege bonus, have dark vision (dosnt sound like much but when your fighting in your own forts its amazing) and have great sacreds (all era's) and mages (mainly middle and late but early are nice too).