The nerfs to Thunder Clap and War Stomp are good, but not enough in my opinion. I think an extra step is required, so for instance a max damage cap could be added to Thunder Clap and the duration of War Stomp could be slightly reduced (e.g., from 3/4/5 to 3/3.5/4.5).
The buffs to Witch Doctors and Druids of the Talons are also nice, but at the same time I feel other equally underused units might benefit from something too (e.g., Gryphons, Ghouls, Necromancers, Frost Wyrms).
The Tranquility duration buff makes no sense because it’s one of the few spells that retains its utility even in non-combat situation. It should be reverted, it’s already a great ultimate spell and furthermore has a crazy good cooldown for what it provides.
I’m a bit puzzled by the Undead changes. Certainly it’s great news that finally the Crypt Lord is receiving some love and that Ritual Dagger won’t be a meme item anymore, but I’m a bit concerned these buffs are only going to strengthen the actual meta with Death Knight first. I’m confident a good balance can be found in nerfing such hero (or at least some elements revolving around the current meta), also because the nerf to Skeleton Warriors is not fixing the matchup against Human. It might even play a big role at the highest level, but in the end the other 95% of Human players are still going to get steamrolled.
I love the changes to items. Just, out of consistency, Pendant of Energy should be nerfed as well, considering the treatment other mana items received.
Lastly, something not addressed yet with suggested balance changes: Human mirror. Of course it’s balanced in itself, but it’s extremely boring when both parties are just massing Spell Breakers and there’s very little room for any interaction involving spells.