After more testing and fiddling, this is the best deck I’ve been able to work up. I actually really like it and had fun playing with it. Some intense matches were played with it too.
The best that build can do is provide some fundamental support in healing and draw. Surprisingly though, it does both very well if you play smart. For example, against vaath, I know a lot of them like to smorc so I put priority on the Rx surviving by baiting nat select on bandit. I have Bake for a little extra draw cause t2 can be unreliable at times but also because Bake has an amazing body that can clear a lot of things in combination with fist and tear. Speaking of tear, try not to play him as a turn one play unless you’re really desperate or the matchup will require pings. I’ve won many matches by holding him and having no turn one.
Hamon is great, I strongly prefer to Kron personally, but watch out for rebuke and paragon (rebuke to 5 mana). Most people don’t run removal nowadays so it can be a great threat, just  don’t play it on an empty board and  don’t expect it to survive for long.
Dioltas is a big threat just like Hamon but can also hold enemies down with the tombstone and just slow things down in general. I wouldn’t say he’s super important, you can replace with another 4 drop of your choice but that’s my personal pick.
Zendo is a 2 of because he is useless unless you have a hamon on the field already. I don’t really recall even playing the card once, could be replaced for something else, preferably something can finish your opponent off. Mizuchi is just a random card I put in to great success might I add. He pulls his weight as either removal bait or gets triggered and you got a cool 4/5 with flying on the field. Might consider putting him to a 2 of and zendo to 1 of.
Flamewreath is a tough card to use. I feel confident in playing with him now, but I would recommend to people who are unfamiliar with him to instead use Reva and replace wreath with KE or a solid 4 drop. Wreath is an all in play, so if you use him, be sure to be close to killing them. Never play him naked but at the same time playing him naked without moving him can be a great play. You can also play really early in the game when the enemy is at 25 HP. It requires a lot of intuition in my experience to play him so be careful.
Overall, this is just a basic midrange deck. I doubt it will be super successful in diamond or even S, but I think it works great. The build core is a small part but really adds a lot to the deck outside of magmar matchups mainly because of their 0/10 stickiness and utility.