The Champions' Blade

Description
The Champions' Blade is a very powerful black-bladed magic weapon. Sir Tetch has described the blade as "black with a red pommel".

Effects
If you touched it (and was not it's wielder), would cause your arm to fall off.

Accounts
 'The Champions' Blade, all four, from my understanding, ceased to be once the shadowlord was destroyed, all save one, which is currently held by Eth.' ~From a note in 1002 from Sir Tetch:

'' 'I am not certain how, but I believe the Red Champion Blade was still in. Adyan's possession. When he was defeated by the demon Fey and banished to the Well of Souls, Jonny Angel took it for safe keeping. At the Ascension War Adyan once again had the Blade, and I believe he took it with him to the afterlife.' ~''From a note in 1002 by Heron McKrye:

Source
http://library.cityofivory.org/468/The-Champions--Blade