Against decks like The Deck, which often wins with a couple Serra Angels and Mishras Factories, cards like Moat, Meekstone, and Wrath of God can come out for Dust to Dust, Disenchant, and Swords to Plowshares
Commander: Commander is the format most new and casual players are familiar with
Greed is, to my memory, the first Black card here that has the 'lose life, draw cards' gimmick that would spiral out of control once we get to some of the Yawgmoth cards
Thanks to a combination of the ninth Pokemon generations lack of popularity and ex cards being seen as less interesting than their predecessors, Sword & Shields VMAX cards, players dont like the Scarlet & Violet era, so theyre not buying the product
[1] Target 2 face-up monsters on the field, including 1 "Unchained Soul" Link monster you control
In addition to typical black reanimation, the Necrons make use of unearth and mill to make sure that you can always get plenty of value out of your graveyard