If I was forced to make a choice, I would say that one of the best picks for Expanded would be decks focusing on Vileplume Item Lock + Rock Guard. With how many decks in Expanded that run a surplus of item cards, having the ability to place a Turn 0 or Turn 1 Item Lock with no compromises outside of cards that completely shut down the ability causing it is pretty devastating. Add in something like Rock Guard, which punishes your opponent hard for just trying to commit to some form of offense, and you have a troublesome deck to battle against.
