Alright, so I am a watcher if Doctor Freeze. Recently he started a frenzy to immo challenge starting in iron. I went on to his stream and said he should stop smurfing and he responded with "if they are iron, there's a lot more holding them...

Is he useful or a niche pick? over or underpowered? Opinions on his kit and balance? I saw a lot of people saying he was op whrn he released but i personally think there are better sentinels, even more so for competitive play.