Harlyn (3.5e Equipment)
From D&D Wiki
This longsword-like weapon is favoured by the Aasimar, who enjoy it's versatility, and often use it with a shield. It's two long blades make it wider than a conventional longsword, and both wickedly sharp blades curve outwards before tapering suddenly into a pair of vicious points, allowing it to be used as either a slashing or piercing weapon.
It's unconventional shape means it is weighted oddly, however in the hands of one trained to use it is a devistating weapon.
All Aasamir and Lesser Aasamir are profficient with the Harlyn