Give the SoD permanent explosive properties, and create:
The one, the only:
Sling of Anarchy
Base value of 4. Targets mages first. Much stricter on the x, slightly more lenient on the + (which is how I think base value works anyway)... the oppertunity to seek mages without archery, but for far less damage than the MsKIt could even be a supporter item, seeing as we didn't get one ;)