This is my favourite deck that I have built, but unfortunately it does not hold up to the current meta and needs a rework.
I think the combos are relatively self-explanatory, you're looking for Hood ->Viper and Titania + Goblin to lockout your opponent, followed by Wong with Hazmat/Ironheart to increase numbers on your board and/or decrease numbers on your opponent's board. Debrii further clogs up their board, adding bodies to debuff for Hazmat. Furthermore, it counters an obvious Galactus play.
I have included some suggestion cards which I have seen in other Hazmat clog decks if you're missing any cards. I personally don't think Mystique is good enough and is a "win-more" card in THIS deck as the only thing she is copying is Wong. I don't think Black Widow is very good outside of Dark Hawk, but if you're missing a card it is also some ok disruption and clogs up the opponent's board, but can also give them a free Lockjaw rotation, so be wary of that.
Shang has some anti-synergy with the deck as, if you Hazmat your opponent's cards then you may no longer be able to Shang them, but it's still good utility into Shuri. Enchantress can also be a good utility option as she can turn off your Mary as well as opposing Hawks/Dinos, however, be careful you don't turn off your Cage; if your opponent is thinking about Enchantress they'll play their ongoing cards into your Cage lane (I suppose you could also use this to bait your opponent). Rogue could also have some potential as there is a lot of Luke Cage going round atm.
Polaris is a generically good card that adds good stats and can clog an area of your opponent's board, however, I think that the other cards synergise a little better with what the deck is going for, but this is still a good swap in for something. Mojo can also help you win a location you've managed to clog and is another strong swap in option.
Gamora or Spiderwoman, both are good and both can put up to 12 stats onto the board, Gamora might be a bit more consistent.
I was originally playing Absman and Zabu in the main deck list but found I was often lacking power on the board, but I still really like the idea of playing them so I might have to re-explore.