Hey, I was planning to create a WW as well.
I feel that I am not supposed to play Goblins since some think I don't know how to play it. Sad... They said I don't know how to use Sharpshooter. oh well. hahahaha
I was gonna suggest to you Jotun Grunt. Good weapon against Ichorid.

yes, Karakas for Oath (however they said that Oath doesn't use Angels anymore... Sad)
I have nothing against Null Rod, but in my supposed build, I have 4 Vials and 4 Skullclamps MAIN. Haven't tested it, though.