Ivern has the lowest win rate in LoL history.

actually it's syndra with around ~26% when she was released, too low numbers and too much bugs.

when they stop building this item on him it will go up

Let's see...

He is still very new. Only been out about two weeks now. Many people have yet to play him because he hasn't been free to play. Those who decided to purchase him, haven't had much time to learn him thoroughly. Their team hasn't learned how to best play with him and he does really require team strategy. He is also very different from any other champion in the game previously. His role is that of a jungle support. Jungle is often the last role that people learn. Support is the rolls that the least number of people enjoy.

This guy wasn't around when Syndra was released, clearly.

Sandra on release was 28% iirc

Once people learn how to play him it'll be better. Significantly. My personal WR with him is somewhere around high 70 to low 80%.

I have 100 % winrate with Ivern... vs bots.

It's been going up, don't worry! Things are looking good for the Friend of the Forest... Can't say the same for Azir, whose winrate just went even further down.

yasuo was like 30% win rate on release. i remember yelling at someone for losing to such a shitty champion as zed lol.