There are certainly some themes present in this expansion, but because of the sixteen games in the series, it feels like the cards are all designed to do various weird and unique things, at the cost of them being rather weak in power level
Marvel's Spider-Man - Web-Slinging Winner: Silk, Web WeaverSilk, Web Weaver Runner-up: Spider-SenseSpider-Sense Web-slinging grants an alternative casting cost to a card so that you can cast it for this (usually) reduced amount of mana in addition to returning a tapped creature to your hand
Saga Creatures have chapters just like normal sagas
You can see the spell grants a creature you control an ability that triggers when it dies and that ability makes another creature stronger
Punchy early drops like Cactuar, chocobo tokens, Loporrit Scout and Snow Villiers can only dominate until the true bombs start to hit the board
Drawing A Whole New World will quickly rack up your lore count, especially if you've got more than one Jafar, Striking Illusionist in play and exerted when you either play or Sing the song