You also can't really grind out a game of commander in the same way that you might 1v1, going for card value, trading up a little, keeping track of cards in hand, and trying to essentially create more threats than your opponent can answer
You must also Tribute monsters from your hand or field, and/or banish "Red-Eyes" monsters from your GY, whose total Levels equal 8 or more
Archive Trap If you're a Modern player, Archive Trap is one of the top mill cards to pick up
Giovanni (Mewtwo Packs): An essential card for many decks due to its ability to add 10 damage to your attacks, often making or breaking key matchups
Macro Cosmos This trap card is so powerful that its been limited to 1 copy per deck and I dont see that changing any time soon
While the rumours from that Reddit thread look realistic, they are still rumours