About the EC: Although it can shift a bit depending on the conditions, my primary reference for fairness is 'equal amount of decks & equal ups'. This card practically ups half MA decks and at best 1/3 of duo decks. I didn't do any math yet. But this card should make us play general vs general in our duos and 3-4 extra ups in mono aether.
So RR, expect to face 8-10 ups from our duos (less IF we use a grabbow), 15-16 ups in our mono aethers. Not really that overwhelming eh ? If it helps, last round we had a huge up disadvantage along with fighting everyone.
Pros for aether: General vs general fight. Equal ups with generals in duos, +4-6 ups more than opponent generals in MA's unless they relic.
Cons for aether: Again, we fight everyone. Other teams can up aether cards.