Making me post from my phone just to clarify that we actually tested setting the skills on a thief and it legitimately wasn't working. Nothing else was happening behind the scenes so that's a false assumption. A number of the ideas I had we're related to poison skills spells or communes including some from the Venom path since they seem like they would have been a nice fit but nothing worked right and so I couldn't find something that actually would have fit on a thief.