Ilikeswords

Yes, there are a few enchantments missing from this such as earth, which would give it a duller edge but in return cause it to hit much more powerfully. An effect such as this could be used to counter enemies who are normally strong against bladed weapons, but are weak against things like maces and hammers or other such blunt weapons.

Or perhaps a water enchantment would work? Seeing as water as an element as a sort of flow within the body it could allow you to bypass their guard completely every so often, and perhaps sometimes cause you to flow away from attacks.