Do you have any experience with Amaliel? I’ve searched this forum and there isn’t anything. I’ve Googled, and found not a lot - just a bit about how he is the angel of punishment and weakness.
Well. There doesn’t seem to be a whole lot of info anywhere…
You might just have to go with it and see what happens.
No sigil that I could find but you can use the name and sigilize that.
(Sidenote: sigil completed at 1:11 )