Each of these effects is well costed on its own, so even if you can only pick one, 5-7 mana will usually ramp out your commander or another expensive spell, and effectively drawing 3 cards will usually get you to a land drop or something you can play later in the game
Junk tokens give aggressive decks a lot more firepower
Each player needs their own deck of Lorcana cards, and using a starter deck is the easiest option if its your first game
And here some more examples from the collection of @fritz
I love the encounter with the Balrog in the movie and the books
Choose a Dragon-focused commander with a clear payoff Start with a commander that does one main thing extremely well, such as cost reduction, token generation, tutoring, combat amplification, or mana generation