Ivern isn't dead so much as he is vastly outclassed. Before, everyone was driving around in go carts and sure Ivern's cart was a little slower and didn't turn quite as good, but so unique that what he has to offer makes up for that. Now he's in basically the same go kart, only now he's on a fucking NASCAR track racing against stock cars. He didn't become worthless, he's just been so incredibly dwarfed by Rengar, Kha'zix, etc.
It's like god damn dude, you're my main and all, but shit Ivern, nobody wants to buff you because really weird kit that could destroy tournaments, but you're not really up to snuff. If your team is going to lose, all 4 of them can't carry and need the jungler to carry, well, chances are they are going to lose anyway, they are too heavy for you to carry, even if you're playing Kha'zix or Rengar etc.
I can't actually win a fight solo except at maybe level 3 or level 6-8 and I have the red buff and Daisy is out and I root them first before they hit me. I can't really tank per se, I can have daisy tank turrets which is awesome, I can set up teamfights to win by placing redemption into a solari locket.
Basically I look at it like this, as Ivern I constantly give the team extra jungle buffs, shields, redemption, lockets, extra vision, block off vision, all I do all game is help the fucking team. If the fucking team cannot win with the help of two different supports doing everything they can to help them win after 30 minutes, then they are worthless garbage and don't deserve double jungle buffs. I don't tell them that, because then I'd get banned, but its true. They are trash if they can't win when all I fucking do all day is hold up the team by the ass like they are five years old and learning to swim. I don't even go after jungle camps until I need to get my level up to match, I Just gank and camp and counter gank.