9 Baral, Chief of Compliance Stalls the Game, Then Finally Attacks 2,776 Decks on EDHrec.com Counterspells are great in formats like Modern and Legacy, but countermagic is only good for countering game-winning cards or infinite combos in Commander
Rookidee is only useful when used in combination with other cards, or if you are planning to evolve it into the more powerful Corvisquire form
I may be underestimating how important Insidious Fungus is and should have it higher on the list
That aside, everything else about The Brothers War feels cohesive and solid
No player may take actions between the time you choose two creature cards to return and the time they're returned
(Treat phased-out creatures and anything attached to them as though they don't exist until their controller's next turn.) Instant Swiftfoot Boots Equipped creature has hexproof and haste