ToME: the Tales of Maj'Eyal

Hello, I'm playing a lighting archmage on normal and so far it's been a blast, very strong build.

Here's a link to my character:

https://te4.org/characters/184491/tome/ ... 023a693436


I'm looking to specifically kill Lianinininl.
What can I do to prepare for this fight and generally optimize my build?

I have "The Calm" in my inventory but I'm not willing to let go of my current robe because then I won't have capped silence immunity, where else in my build can I spare silence immunity?

Any and all suggestions welcome!