There are new Lorcana League promos, set championships cards, and event promos as well as the very first tie-in promos
When Caesar attacks, you get to pick two of three options if you choose to sacrifice a creature along with the attack
On one hand, you can make an Orc army thats pretty massive, able to do your defensive bidding while you attack with just about anything else, but theres also a light reanimation theme since Sauron can bring creatures back
Not only that, but on future turns you can attack with the Mulldrifter and then blink it for a blocker and two more cards, making it an all-around great option in most situations
If you collect cards past the four-card limit the extras will also be converted into Credits, which can be used to craft new cards
Being able to destroy a monster your opponent controls, WITHOUT TARGETING, is such a good effect to have for an easily accessible boss monster