are u plain nut or just never read about item description . sange & yasha is one heck good item if u know the use of it . +movement speed +attack speed +maim is certainly a good item for chasing / killing hero. not to mention this item adds life ( strength ) + armor ( agility ) as well .

somehow for certain hero that already have its own orb effect spell , like ursa , weaver...it is sometimes nice to pair with yasha , adding attack speed / damage and movement speed