Legacy Blade
The Dungeons of Cirith Gurat #117 (x3)
Item.   Weapon.  

Attach to a hero. Restricted.

Attached hero gets +1 Attack for each side quest in the victory display (Limit +3 Attack.)

...glad would he have been to know its fate who wrought it slowly long ago in the North-kingdom when the Dúnedain were young...
–The Return of the King