ok here i was a bit bord and went to play Morrowind a bit you know to recall all the good old days! and then i loaded an old game and i had the cresent blade which is my fav. wep in morrowind. so is this blade in OB? cuz i would look awsome whit the daedric armor!

Nope.
However, Umbra is back, but the best blade in the game is called Goldbrand

oooh thats to bad. got the goldbrand! nice wep. didn't like the one in morrowind. eny way hope some one will make a mod about it

where do you get goldbrand?

Boethia Shrine Reward

you have to bee at least level 21 to start the thing nice looking blade too

But ,the best looking one is (Ebony Blade)
And Goldbrand.

If you want to read about all the special items of all the games, check the book about lore in the bruma mages guild. The cresent blade is there. There is also a lot of other things as well.