I find the new rules based on the alignment of the moon and sun match score to be rather confusing.
Apparently we discard +2 cards per match we go 0 - 3 (since it's not round 5 yet), and these 2 cards come from vault, correct? Now we have an Event Card that reduces discard by 2. Does that mean we get 2 less deck discards, as we had planned, or that the EC is rendered almost useless by reducing vault discard by 2?
In general, when teams want less discards, they want less deck discards. I could not care less about vault discards yet, at this point in war. I know the discard role focuses on vault discard unless none is available, but nothing is specified like this for the EC.