Alright if you can get it from Bane of Doom + Hero Power on an empty board or if your board is mostly filled with Imps. Not worth it to play on its own. Not useful enough to get from Voidcaller either most of the time.
Art looks cool though. Golden version must look awesome.
Unfortunately it seems all added demons in this expansion are a nerf to Bane of Doom. Chances for a high mana cost minion have decreased.
Could be good with control warlock or even zoo with its lack of big late game scary creatures, just due to the amount of 1/1 tokens you have through Imp Gang Boss and Imp-losion.
Sounds like the effect can also kill this minion itself though, which is a shame because the body is quite nice, would be good if it had more health so you could kill a 4 or 5 atk minion and hero power to kill another minion with this in play only.