Bastard swords are normally a two-handed weapon. If used one-handed, they require extra training and are then classified as an exotic weapon.
“Fatal Touch, the favored weapon of Kelemvor, the Faerûnian god of the dead, was a+5 ghost touch...Fatal Touch
“The Moonsword was the weapon wielded by Eilistraee, the drow goddess of moonlight and swordwork...Moonsword
“A singing sword was either a+1 greatsword, or a+3 bastard sword, made of silver, that sang...Singing sword
“Keryvian (also known as Foebane or Demron's Bane) is a Baneblade of Demron and a mighty...Keryvian
“Vindicator was Helm's bastard sword. The sword glowed with silvery flame and had the symbol of...Vindicator
“Dornavver, also known as Demonbane, was a legendary weapon of Faerûnian history. It was a sword...Dornavver