Pendant of the Incandescent Blade

''A small white blade with a 'v' shaped hilt that grows to suit the occasion, the grip changes size separately to suit the user. The enchantment suits assassination, but the colouration is anything but subtle.''

A pendant that can be transformed into a dagger, a shortsword, a longsword, a bastard sword, or a greatsword. Regardless of the form it takes it is a +1 silver weapon.

This particular version seems to have another enchantment also.