@mild veldt
About the powerlevel,
I'm pretty happy with where the deck sits powerlevelwise. I have almost 40% winrate and I only play with PL8s and make sure that everyone is ready for turn 6/7 wins.
The goal of this "final" tuning is to just find cards that aren't great and replace them with cards that will make my deck run more smoothy. After our convo I took out the Pongify/Rapid and instead added cards that let me discard my big creatures - [[bitter triumph]], [[ghostly pilferer]] (I felt like I'm running a bit to much of creature kill spells/wraths anyway, so I cut one).
About stubborn denial,
I think that card is actually great. I definitely want to get a Force of will too eventually but I think I'm gonna cut something else for it.
The main reason for the amount of counters I'm running is to protect my combo and whenever I'm comboing off I always have a power4 creature (Scarab god, his ability also makes 4/4). I definitely think swan song/offer are better but denial is really much better than it looks in my deck.
About the overcharged amalgam,
I had it in my deck for a while but countering anything for 4mana didn't feel great and it doesn't leave a body I could later sacrifice to Razaketh.
About trickbind,
That's an interesting idea! I have never seen that card. Do you think it's better than tishana's tidebinder?
About the mana rock,
I really value being able to ramp on turn 2 over turn 3. If I play a 2mana rock, I can follow up with a bunch of 4mana cards on turn 3. If I play a 3mana rock, it's pretty likely I would do nothing on turn 2.
About wheels,
I have both of the wheels you sent me in my binder, I'm just not sure whether I should add even more ways to make everyone loose their hands xdd.
Another worry - when I used to play those in the deck, they kind of sucked unless I had narset/notion thief. I like to sculpt my hand and this is taking a blind jump but maybe it worth it.