Exodia build?
Feels like the strongest build you can get very late game by selling boots, you one tap squishies.
3100 damage on 150 armor target (no DD or Tabi so probably lower against any juggernaut/tank) by R > E > Q > aa > aa which come incredibly fast with HoB + Fiendhunter.
Probably sell Yuntal for Shieldbow for tankiness after getting Fiendhunter but game this long doesn't happen much.
I'd go relentless hunter rune for out of combat MS tho, 355 is great but can feel quite slow when you need to rotate between fights.
Btw I don't see much people trying Yuntal on Yi but it might be secret OP.