The Blue Sun

Thrice round the room the blue sun slipped

With a dip and a spin and a flash

And Into Shadow nimbly skipped

With the ring of a saber's clash  

-- From the Bladesong of Forgemaster Kelail

A sturdy +1 shortsword, the Blue Sun bears its namesake, a gibbous moon depicted on the flat of the blade in a single sapphire the length of a man's middle finger. Much like the moon from which it takes its name, the Blue Sun sheds false light, obscuring the wielder in shadow. The wielder is always treated as one step higher (or lower, depending on system used) AC than armor and other bonuses normally allow.