User blog comment:XXEpicMage99Xx/Skyrim DLC Weapon Ideas by xXEpicMage99Xx/@comment-5055485-20120429082439

I would love to see the return of Umbra. It was my favorite blade back in Oblivion. I can imagine it as a black sword with runes dotting the length of the blade that glow when you absorb your victim's soull.

Also, I think that the manner of obtaining it should be similar to when you obtain Shadowrend in Shivering Isles. Depending on which skill is higher, it affects the sword's form.

One Handed = Longsword

Two Handed = Claymore

Sneak = Dagger