Well starting from next round, tems like water life and Time (maybe others we will see) will play only with whatever they have left which is the deck that won on previous round so we can look at those decks and think which they'd play against aether . Its pretty unlikely that they can make a new from salvage cards since they are so tight on everything. But for teams like fire and entropy, there's not much we can predict except whatever we think they want to use.
