Note that only one of the Rings of Ley is made of tighmeavril (allegedly). The RIng of Ley Use.
As for the information I have on the tighmeavril weapons, I am not 100% certain as to where it came from. I just noticed the thread and remembered that I had many notes scribbled in the margins of my BoS. If I remember correctly, it was taken from the birthright netbook and various other birthright sites that I once frequented.
I do not consider it to be rote material, and the actual abilities and functions of the items are purely up to the DM, as is always the case. As for my campaign, this is how I’ve recorded it, privatly.
As to whether or not this is true, that is for the players to discover, but I have accepted this as the standard Sage knowledge and speculation on the subject.
I have thought deeply of the tighmeavril weapons, and have written a number of my thoughts down in supplemental form.
This should perhaps appear on the Writer’s Guild section, but I’ll post it here.
Tighmaevril weapons, better known as “Bloodsilver”, are made of a rare alloy created by a sidhelin smith between two and three thousand years ago. The elven smith, Ghoigwnnwd, was the only person who has ever discovered the secret of working the metal, and made about a dozen such items before disappearing from Cerilian history.
From the elven oral tradition, it is known that only a sidhelin could craft such weapons and that their manufacture required such vast periods of time, only an immortal race could hope to create them. It is understood that a mere dagger made of this metal could take as many as forty years to complete! The great sword, Lifender, now possessed by the Gorgon took no less than two centuries to craft!
Although Ghoigwnnwd disappeared, legend says that he traveled alone to a distant and reclusive place east of the Aelvinwode to craft his greatest weapon. If this rumor is true, and he has been working diligently for over two millennia, one can only begin to imagine the potential of such an item (and many try).
Others believe, and this is the accepted sidhelien story, that after Deismaar and the corruption of Azrai was lifted, Ghoigwnnwd discovered the darker uses of his prized creations (bloodtheft), and having a sudden change of heart, he killed himself with one of his own weapons rather than live out his own eternal existence seeing tighmaevril’s sinister purpose put to use repeatedly through the ages.
Regardless of which story, if either, is true, many go forth seeking these powerful weapons, and the discussion of the legendary “13th Usurper” persist.