For example, if you want a Rush Deck to flood the battlefield with low level creatures, you will probably want less 5 Cost Cards and more 2 or 3
Ping your opponent with a flying infect creature like Viral Drake to get the ball rolling on poison counters so you can then attack with Chained Throatseeker for more infect damage
Planeswalker Utility: Grist, the Hunger Tide pulls double dutyplaneswalker and creaturesynergizing perfectly with Traverse the Ulvenwald
Resource Management: How many lands and mana sources are accessible
Arahbo, the First Fang is a typal lord that gives your cats a buff and pumps out tokens when your other (nontoken) cats enter, but youve only got access to white cats if you run it as your commander
You usually Planeswalk away well before anyone gains any quality amount of life, and then the potential card drawing only gets better for others until you walk away