Be me, shen top lane, go 3/1, yi is like what, 3/1? I taunt and in 1.87 seconds he deals over 800 true damage(in a 3v1, which he ends up killing everyone, alone). My build was spirit visage, ninja tabi, Chain vest and bambi. How was this item allowed to hit live?
What smite was it? 
or 
? What items did he have? Did he also have a 
? (I know the is physical damage but that still might have been something that wore him down). Was he lane yi getting to sated with kills or jungle yi with a mix of camps and kills? Why didn't you invade if he was jungle and would most likely be building / ?? Did he have any dragon buffs? What levels were you?
You leave a lot of information out in this post. Like, 
could've been 18 and you could've been 14 for all we know
I think it is just sated devour. Just too much damage with 3 on hit effects for 2 attacks just makes attack speed multiplied by 1.5 (after the other percent increases) on top of the 50% attack speed. It may be just too powerful in this state, but making it once every 3 consecutive attacks (like Jax's Ult passive) may be a good alternative. All I have seen so far are junglers with this item almost exclusively and running junglers to make the item effective with no counter to this, even frozen heart's passive or other attack speed reductions or defensive. Even thornmail is not useful because its on the basic attack, not on the other on hit like the magic damage. Rammus could be good but he has a window of vulnerability. 3 bans isn't enough for this item so I think it needs a nerf.
well i was shen and i taunted him, it knocks all of his other damage down by 50% except the true, so even when im peeling, i get shredded, he had blue smite with devourer, botrk, and boots 2 with i think a longsword
