mtg commander oversized cards put a +1/+1 counter on each Vampire you control. Roon of the Hidden Realm

Creating a massive Construct is important, but turning all of your artifacts into Mox Sapphires is what makes this card so powerful

Do you have any other suggestions on what to buy and what to avoid

Elesh Norn, Mother of Machines tacks on Torpor Orb, because why not

Such effects also sidestep indestructible and regeneration, which is a nice bonus

Alela, Artful Provocateur is a more open-ended card than the other generals in what it asks, so building and speculating around it is trickier, and at this point, I havent seen any cards that jump out as specs, so Im avoiding it for the time being

If you use Chrome Mox to try and win quickly, it is hard to avoid running out of cards in your hand