Gone are the days people would run commanders just because they were the colours they wanted access to Card advantage every top commander provides card advantage in some way, whether its literally drawing cards, card selection via scrying or similar, bringing cards back from the graveyard, tutoring, or even producing permanents such as tokens
5) As you get close to the Critical Point, you'll still need to work on the Uncommons If your goal is to get all the Rares and not worry about the Mythics (i.e., you'll spend wildcards as needed for the half of Mythics you don't have that you want to play), you'll find that you'll still be missing a decent chunk of Uncommons
Being able to take the fight to ready characters rather than just those exerted means that no opponents character is safe with the knight on the field
Set and Draft Boosters are being phased out and replaced by this combined product
I hope this article has helped your understanding what vigilance does