I highly doubt it. It will just cast that original 14 fissure. For some reason it would be a biased weapon if say a barbarian wanted to use it (I don't know why though).
Good question, I am pretty sure it doesn't get synergies, but we'll see what other people post.
The spell is item-based, so probably not. If the weapon had any other skills that synergize with Fissure, it might, but I would have to say it likely doesn't.