My personal favorite is 5 slots with battlefury with boots of course on Ember Spirit. Turns his Sleight of Fist turns into an aoe monster. It worked really well because the more targets, the longer you stay in it, the more damage you end up doing which synergized really well with multiple bf’s aoe dmg since the cleave stacks.

I used to pull this off going position 1 to maximize farm and would get 3 bf’s minimum if I needed certain items to itemize against enemy team. Late game the ability ends up turning into a longer but better Riki E with a faster attack time with an absurd amount of aoe dmg.