Just gonna go through every card that was listed.
Nerfs:
Viego - Yeah like you can hit his initial stats and it won't matter too much because he's a grower not a shower.
Hate spike - mystic shot for 1 might have been an overstep
Thousand tales - too much card advantage with no down side could just cycle and it would be fine
Riptide sermon - yeah 1 face dmg is fine for this card and it will still be great
Concurrent timeliness - rasa fraza hurmergurd sorry little freak out there for nerfing this meme
Harrowing - yeah one card shouldn't be so game winning
Mark of the storm - once again the fact that a one drop wasn't only mystic shooting and stunning he was get exciting was probably a bit much
Rite of calling - yeah particularly problematic when the card tutors for bontu big o dog God at 22 stats, so a nerf here is nice
Decimate - back to back decimate is literally been a game defining play pattern for as long as I can remember at 6 mana its a little more taxing for the aggro player.
Buffs:
Leona - yeah haven't seen daybreak since its literal release great buff target
Tahm Kench - yeah soraka tahm shouldn't feel so bad to play and win with
Nocturn - honestly this deck is really close to being competitive with Diana so this buff might really matter
Master Yi - God yes 12 dmg in Ionia is impossible, and if you run him in noxious as a combo piece the deck suffers on the control spectrum so making him easier to turbo is good
Fiora - Grapler gonna be happy that she goes back to a 3/3 and at those stats is legitimately frightening and thats good she should feed on grandma bunny to keep the deck in check
Swain - probably gonna make it easier for him to land on 5 leveled so it's more of a gangplank level threat
Sun guardian - really hard for daybreak to close put games so big overwhelm plus stun is a good combo
Illoi - honestly still a really good card, and reverting her nerf will make her great again, but the tenticle smash nerf will remain for balance I personally don't play that card in Illoi anymore
Morning light - more daybreak stuff
Ohrn - once again he's a damn good card already but has weaknesses to stun and bounce say 8 levels off 8 dmg swing then he's guaranteed to come down on 7 pre leveled and threatening overwhelm
Solari Steilacorn - hasn't been a card but might be a valid healing choice for daybreak into aggro.
Vilemaw and twisted tree line - Kalista fearsome with the ghosts hadn't been a deck so absolutely throw it a buff
Eula, paper tree - kinda the meme portion of thr patch but every great patch need meme buffs so that makes me happy
Shireking spinner - I love this card for flavor give actual spider tribal a threatening follower and it wasn't that bad to begin with
Ritual of renewal - can be 6 mana and then you try to double cast with karma worth experimenting
Rippers bay - it's the only bad lurk card so absolutely make it do something
Lethiathan - 8 drops in this meta need to be game winning and its initial overwhelm stats of 5 is too low for where thr game is right now
Magical journey - its the Bard grandma card that defined the archetype, except it was bad and nobody played it maybe now it cycles?
Realms caretaker - more meme buffs which is good
Rock bear - midrange landmark hasn't been a deck for a looooong time probably a yeti now and that's very strong
Fun Smith- pushing the new equipment synergy to jam up your spell dmg
Mammoths- these are the bad freijord transform cards and while transform is better than people think it could use a finisher
Wind singer - units that bounce is a very blue magic mtg kinda card and it's over priced in LOR
And thats it for the patch
I would pre-rate it a 8 for very good. Hits what it needs to, buffs underplayed Champs, and followers, and some fun meme stuff.