2 Vault 12: The Necropolis An Army In A Can Or Vault While it does cost a sizable six mana, Vault 12 is the kind of card that can build you a board almost single handedly
While Emrakul costs a shocking 13 mana, which is steep even by Eldrazi standards, it does have built-in cost reduction
Based on the amount of creatures and artifacts in your opponent's graveyard, you salvage equipment and stuff to give your creatures buffs
If you gain 4 life from a lifelink creature, 3 life from another lifelink creature, and gain 1 life from a creature entering the battlefield under your control, each opponent will lose 4 life, then 3 life and final 1 more life
Although the Cascade mechanic can be disrupted rather easily by various colors and multiple cards, the deck mostly performs when the overall meta isnt well-prepared for it and cutting down on sideboard interactions
Lady dies to a Bolt and does little to help the voltron commander strategy that is your best bet if you insist on this in your command zone