If youre looking to clear the board, Damnation is the most straightforward way to do it
Cards like Narset, Parter of Veils, Grand Abolisher, Drannith Magistrate, and even Teferi, Time Raveler can create a hostile environment for anyone trying to interact
Energy Cards If youre playing a Pokmon match, youll need to have plenty of Energy cards in your deck
Duress is especially good out of the sideboard since sideboarding often involves bringing in noncreature answers like Rest in Peace or additional copies of cheap interaction
All this is to say that while expected value might sound like something that's primarily of interest to finance types, it actually has a huge impact on most people who are thinking about spending their money on the set
Combo decks value consistency, speed, and resilience: the deck should be reliable enough to produce the combo on a regular basis, the deck should be able to use the combo fast enough to win before the opponent, and the deck should be able to withstand disruption and still win . Link I think this is way too long, and it suffers from some of the same problems as some of the definitions above
