Okay. Whilst I approve of practically *everything* in this patch - you cannot release a balance patch 4 days before the Western Clash. You just can't. This fundamentally changes some of the highest priority heroes in the game. Every teams practice just went out of the window.
Now, onto the deails:
1) Tychus. I've said he needed nerfing for some time, but this isn't what I expected them to do. He retains his tankyness, and his Overpower got stronger (shorter cooldown, lower mana), but the reduction on his auto attack range is *huge*. It's what prevented him from being good in the first place, and it will be interesting to see how that works out in the long run. The nerf to his healing talent at 13 is very warranted, as it was insane combined with the longer duration on his trait talent at 4 - they now in some respects work against each other, as you often want the healing asap and not after 8 seconds.
2) Varian - thank gods they bit the bullet and removed the point on click stun. That talent could never be balanced, because it added too much power to the ability. They've removed talents that add stuns to abilities from everyone in the game barring Raynor I think, and for a good reason - it should never have gone live, and I'm glad its removed. Saying that, I do think it will impact his viability because a slow isn't the same as a stun, and in particular it allows Iceblock to be cast. Great change, and appreciate the damage increase for dps specs as well (although Twin Blades probably needs love as well!).
3) Murky: just fucking die you cancerous piece of shit.
4) Lucio - not sure about nerfing his basic E trait. The issue with Lucio is the massive healing boost he gets at 16, and then 20, not his inbuilt healing. I think by nerfing the basic heal he might be too weak pre-16 to be a solo healer, and unlike other dual-healers he doesn't bring damage or CC.
5) Malfurion: Nerf to roots duration is good, I'm glad to see this is the change rather than adding the delay back to the ability which meant it was ridiculously easy to avoid. 2 seconds of root duration with the talent really was obscene. The nerf to mana regen on Twilight Dream is also a great choice - as they say it was a hidden ability that actually made a big difference. Malf goes from being massively mana starved pre-10 to having 0 mana issues once he picks his heroic, and it shouldn't completely remove mana from him like it did.
6) Tassadar - Removal of the perma shield is great. It was a stupid quest, but still practically mandatory at the pro-level, and made for unfun game play. This looks to be really, really strong without being abusive like the old talent was.
Still think in the long run he needs rebuilding to either be a proper support, or not a support at all, but you take what you can get I guess.
7) Rexxar - minor QoL change that seems good to me.
Overall these look to be a brilliant set of nerfs, which I think were definitely needed and will shake the game up a lot. I'm just not convinced they need to hit 3 days before a huge championship.