Each of the ten decks contains a random selection of 60 cards from the 302 black-bordered cards released in the Beta Edition run, typically including two rares (there is a very small chance - around 3% - that a rare card will be replaced by a basic land in each deck)
For example, say you exiled the card Argothian Sprite with Hazel's Brewmaster
Enchantment - Class Boseiju Reaches Skyward (As this Saga enters and after your draw step, add a lore counter.) I Search your library for up to two basic Forest cards, reveal them, put them into your hand, then shuffle
Start with the Eldrazi reference on page 221 but imagine crossing it with a horse
Using the Mardu mana combination of red, black, and white, this deck focuses heavily on bringing cards back from your graveyard for a second chance at doing damage to your opponents, and the Commander even mills two cards every turn to try and put some spicy creatures in there for them to bring to the battlefield later in your turn