I see many people building basher or forcestaff on bloodseeker
It can work, but is not optimal
Forcestaff is really bad on him, even more since it doesnt give attack speed anymore
Basher relies on RNG, you may or may not bash an hero teleporting away
This build is focused on stacking agility items, because bloodrage works with base damage only, with just two items that aren't too expensive you will be hitting for 200-300 dmg, you will be killing the enemies before they TP away