Your main commander is Hearthhull, the Worldseed, a massive spacecraft that you power up by tapping your creatures
From there, you want clear access to games, payment options, support, and responsible play tools, all without confusion or hidden steps
Mirkwood Bats Mirkwood Bats is so good because its not hard to create tokens and sacrifice them these days, especially with the prevalence of treasure tokens
The red and green abilities are the ones that convert your spells into damage, making them the most valuable triggers to focus on when building around Aragorn
Conjurers Closet I think enters-the-battlefield triggers are my favorite Magic mechanic, so itd follow that Conjurers Closet is a favorite card
You can also build decks and engage in battles against other players