Alright, I think it's about time we talked about Graves and his interaction with Death's Dance.

This fucker is tanky, deals a TON of damage, and heals a huge amount.

With his bruiser build, he has the same problem as Yasuo and Ekko does, brusier build Graves losing nothing for going bruiser. In fact he gains a lot more going bruiser than he does going squishy. He has large innate resistances, so any health he builds is doubly effective. And as you should notice, most bruiser items have health, not resistances.

Items like Death's Dance, Sterak's, Black Cleaver, etc all add very significant amounts to his burst and DPS while simultaneously making him egregiously tanky. He has aoe benefit of that DD can hit multiple targets (while those pellets deal 100% of the damage, not 30%) which enhances his healing. He's also incredibly safe in the jungle, and because he can take minimal if any damage during his first clear, it's incredibly difficult to successfully invade against him because he can duel many junglers and escape the ones he can't due to his innate tankiness and higher health than the enemy jungler.

All of this results in him scaling insanely well while ganking pretty decently due to his low cd dash and red buff, on top of pretty good burst, even early. Then he scales late and shreds your team and face tank any attempt at assassinating him.