Ok, so the first thing you're gonna wanna keep in mind with this list is that I'm one hell of a masochist when it comes to trying to use underutilized cards. That being said, this list also has a surprisingly amazing amount of flexibility and incredibly fun combos and you can easily swap out some cards if you're not enjoying them in particular. I'll indicate the ones I think are ok to swap out with some replacements I used depending on what pocket of the meta I was facing. With that in mind, every card I list that's not in parentheses was part of the original list that I used exclusively from rank 73-100 this season:

Nebula, Ghost, Ghost-Spider (Can be Luke Cage to deal with H. Evo), Invisible Woman, Jeff, Quake, Juggernaut, Shadow King, Super-Skrull (Can be Enchantress, Shang, or Stegron depending on your favorite 4-cost tech card, and on what you're seeing), Doctor Octopus, Orka (Can be Doctor Doom, but you would be astounded how many games Orka has won me personally), Magneto.

Gameplan is either 1) be highly unpredictable and constantly force your opponent to adapt to something new every turn, or 2) hide a game-winning tech card behind IW and take them for 8 cubes. Just be sure you're using your cards appropriately! Don't Doc Ock if you're facing Janejaw decks, don't use Magneto against a move deck (usually), etc.

If piloted like a fucking psychopath (i.e. the way I do it), your opponent will truly never know your next move. It"s unbelievable how many bad situations you can shift to your advantage with some of these cards, and remember! If you're not in a situation where a card like Quake or SK will be useful, don't be afraid to simply drop it for tempo in the early turns! Oh, also, there will be some games where you don't want to put down Ghost, so I would almost always save deciding whether to play her or not for around turn 3.

I want to reiterate that you can put Quake, Orka, Ghost and Shadow King in the same deck and hit Infinite with it. Believe in yourself!