Assassin nations?

[Taqwus]

Yeah, not a fan of Tupilaks due to their att/def.

Ah, forgot about the Samanishadas. Vicious, if memory serves. Likewise, the seducers (including the non-national Succubus blood summon) and Sirens can be outfitted as such, although Succubi are slow to work with -- if the seduction succeeds, they have to fly back all the way from the capital.

Aside -- it is probably a bad idea to use Succubi with an underwater nation, although it might be funny from a really really warped POV if she has water-breathing gear on. Talk about a bad date...