Firstly, you double the you can create when tapping lands, allowing you to double up on your resources
It was best summarized by TappedOut user PookandPie in their primer as: So because of X, I get infinite +1/+1 counters
The biggest loser this week was actually one of the most hyped cards in the set with Atraxa, Grand Unifier dropping 13% to under $30
A simple way to start evaluating a card is to ask yourself, What value do I get for playing this? EDH is a game of big spells, big creatures, and big plays, so a vanilla 2/2 probably isnt going to get very far into your deck construction process if you start with this question
March of the Machine: The Aftermath March of the Machine: The Aftermath March of the Machine: The Aftermath: Epilogue Booster Release Date: May 12, 2023 Epilogue Boosters continue the story in between sets