1.) The necklace itself is untradeable. This means that you can't get rid of it if you have second thoughts about using it. Why? No logical reason. Can anyone think of a reason why they would make it untradeable?
2.) A good bit of spading has been done today on it, and basically: a, it gets worse the more you use it per day, and b, it gets worse the more you use it per ascension
3.) It's a sucky skill. You can only use it a certain number of times per day. Again, it's also just an all around sucky skill.
harsh, you say? the thing shouldn't be an iotm. this is possibly my least favorite item they've come up with, and certainly the worst skill.