Its weight, health, cost and damages are between glass claymore's and daedric claymore's.
Since i don't know how to make it appear on mobs or at vendors, you have to write in the console "player->additem ebony_claymore 1" to get it in your inventory.
There must not be any bug with this mod since i made it from the vanilla Umbra sword file in the construction set, but let me know if you find any bug.
Feel free to share this mod or use it in your own creations, while you quote my original mod as credits.
Spend nice hours on this fabulous game :)