Warmonger overall is a pretty balanced character. I have no issues with the character as a whole or even in a 1v1 to be honest.
The issue is that her claw HA in team fights in my opinion is way too strong. It’s totally fine in my opinion to keep the HA upon release of the claw, but she should not be able to have HA that early. Again, this is my opinion, I’m not the highest tier player and I also play on console (not that that is very applicable for this particular post, but worth noting in pertinence to team fights where players mostly just spam attacks. Also worth noting you pretty much have to hit her out of claw in anticipation before it gains HA). This is just my observation and something I think would be a fair way to address her claw. Basically, I think it should behave like Wardens shoulder bash. There is no safe way in a team fight to counter her claw and it makes for easy finishes on their end as any AOE attack you can use becomes null and void against it. You can still dodge but usually at the expense of taking a big hit from a different opponent.
Again, maybe I’m the only one who feels this way, but right now it feels just slightly too strong and is a simple change that will increase the quality of team fights without nerfing her much or taking away the essence of the character.