Mono-Blue is a very powerful deck with reasonably simple play patterns, and compared to some other top-tier decks, it can be built for a low initial investment
Meanwhile, Cats is the best long-term deck, overflowing with good lands and artifacts that you can use in a ton of different decks, but struggles because Cats themselves are so limited as a tribe
You can see him creating a tentacled creature in the background, which ties into his effect -- the Conjurer temporarily turns one of your Snow-lands into a 2/2 creature at the cost of not getting mana from that land
Not the movie, the MTG ability
This version of Avatar Aang appears only in raised foil and only in English in any language of Magic: The Gathering | Avatar: The Last Airbender Collector Boosters
Gameplay-wise, this card is a Blocker, but also has an ability that allows you to draw a card when blocking or attacking