[ano]

Maybe one day I'll write my own guide about what I think about Lanka. I won a nice game with them and liked them a lot. Lanka is a real powerhouse that in many aspects is better than other blood nations.
First, if you want to use sacred demons, you need Astral bless. It may be not too good for you thugs but it is awesome for your troops. Palankashas are very good soldiers but they have low basic MR and can be banished easily. Even with MR boost from bless they can be banished very well and that's why I like Kala-Mukhas more in later stages.
Second, you have fantastic teleporting and VERY CHEAP thugs/scs. Raksharaja with proper bless even without equipment can conquer indy provinces easily and with some equipment he is very, very hard to kill. His cost is 270 gp which is very low cost even for a simple mage of such quality. And he is a warrior and a priest warrior!
Third, taking on account all this I went with imprisoned S9W6F4N4 Oracle with rather good scales. And I still think that it is a perfect pretender for Lanka. S9 helps your troops much and gives twist fate to your troops and thugs (which may be very important). You may use Asaras early on (I took sloth 2 and didn't regret it) because with S9 and many HP they kill the enemies fast and die rarely. Then you should switch to Palankashas and use Asaras as flankers and archers (they hurl javelins over really long distances). W6, N4 and F4 boost your thugs greatly and are very good for your troops. Also my oracle immediately forged Staff of Elemental Mastery and cast Gift of Health once he awoke.
And of your blood summons nearly only thing you need are Dakinis. They are awesome and VERY cost effective. Even lightly equipped they may raid enemy provinces and easily conquer them. I have no words to describe how cool Dakinis really are. They are just splendid and have a lot of uses.
I don't know why you could need Raksasas or other demon summons. Maybe for late game when heavily enchanted armies meet each other but they are absolutely useless in the mid and early-late game.
Also I was very unlucky with indy mages in that game (site frequency 55), the only luck being finding enchantress site (very cool for lanka as it gives you 3 elemental paths you lack) and ended up with a HUGE fetish, clam and blood stone economy.