As someone with about 50-60 games on Ivern...
I honestly believe he is the most brain dead and overpowered jungler in the game, and have no clue why he has not been nerfed yet. His jungle process gives him a unique and slight skill curve but once picked up (takes maybe 2-3 games) he becomes simply too easy to play. You are litterally un-able to die to jg creeps, something thats unique to only him. You have probably the most unhealthy counter jungling in the game, litterally walk up channel for 2 seconds, and then smite.
Some possible nerfs include:
Nerfing his Q, I think a decent Q nerf would be making it so that team mates can't use the dash, only allow ivern and daisy to dash from Qs.
Nerfing his shield, In all honesty Ivern has way to much shielding, a monkey could play ivern, all you have to do is press E on fed champions, use your
and
and presto no one is dying on your team.
You could possible nerf daisys knock up range, its basically a braum ult every 3 autos from daisy.
Think of something because honestly ivern needs to be nerfed hes sitting at a 57.78% winrate which is honestly disgusting.