I've been considering Oath for several weapons, like Cryptic Sword, Highland Blade, Balrog Blade, and Small Crescent (all eth, of course). I have several of these weapons, but I've been hesitating, as Oath requires not only Mal but Um too, I think.
Thanks to Omikron's post, I'm not gonna bother. However, I have a question that is pertinent to this subject: Supposing one was going to make Oath, would Cryptic Sword make a good base weapon for a character that needs a single handed weapon, or is the minimum damage too low? I see that Highland Blades and Balrog Blades are pretty similar, so it wouldn't really matter which one one used. HB has a lower str req, a higher dex req, a smaller damage range, a slightly smaller average damage, and a faster speed than BB. I think the biggest determinant of quality here will be the roll on the Oath %ED.
Edit: The problem with BOTD is that it requires an eth BA, CB, GPA, Ghost Spear or Thunder Maul, which will cost extra.
I have made one in a cryptic sword, it works ok but I don't like the crappy minimum damage of this weapon as well as the one found on Flail family weapons. If you need a good one hand sword, I suggest conquest sword. Agreed, it might not be as good as BOTD but for the price it gets you a pretty good weapon nevertheless. Also, in my book, you got style points if that matters. Everyone and his grandmother uses BOTD.
I also have an eth cryptic sword just laying around, but I figured since this balrog blade was superior, why not make oath. It came out about 283% so right in the middle. Probably could have traded my mal + pul + lum for a couple of HRs and made something else, but there is some satisfaction in having entirely self-found runewords, plus I know it'll never poof. Meanwhile I found another eth balrog blade... and I do have a bunch of mals laying around. Unfortunately the only barb I can use it on right now is my gold find barb :duh: