The most obvious and frequently used argument for playing the minimum number of cards is simple: some cards are better than others, some cards will be your best cards, and you dont want to reduce the frequency with which you draw those cards
The first commander of the second deck, which features the three colours green, white and blue, is Galea, Kindler of Hope
Outside-the-box cards: Reap, Gravestorm Phenax, God of Deception Phenax kind of builds itself, but instead of a raw mill deck, Id rather go with something that mills things so that you can use them
You can't have answers for every single matchup, especially in a diverse format like Modern Pinpoint which of the popular decks you want to beat, but also you can beat Do your due diligence in understanding how the meta is changing week to week Question every sideboard you see When you copy and paste a deck into MTG Arena or build it for your next RCQ make sure you're asking yourself questions like "why did this player include this card?" and "what matchup am I bringing this card in?" You don't want to risk wasting your slots on cards you'll never bring in during an event
