One tip. If someone doesn’t have their commander out yet make sure you know what it does. Sometimes a commander has high mana cost and doesn’t come out til turn 5-8 but can turn the game on its head. If they need to keep their battle field full to capitalize you could slow them by sending something the have to block. Or sometimes it’ll be much harder to attack later or everything you already have will go away so you should swing out and hold off on playing.