Wanted: Blight Specific Build

I'm looking to using my main Witch as a Blight-specific build. I love running Blight Maps and originally used a skele-mage build but that became obsolete a few months ago (unless it's been revamped). I've been out of the loop for a couple of seasons and am currently running a Carrion Golem build, which does okay but isn't fantastic. Any suggestions would be greatly appreciated, thanks in advance!

Any Spark build but isn't cheap.

Any Spark build but isn't cheap.