Katara is only three mana, letting you get it on the battlefield early so you can make the most of all your Ally abilities
In terms of cards, each Doctor Who Commander Deck contains a 100 card, pre-constructed Commander Deck, plus 10 Planechase Cards (which add an extra layer of randomness and special effects to your MTG games, should you choose to use them) and a Collector Booster Sample pack, which contains 2 special alt-frame cards, including 1 Rare or Mythic Rare card
$1000 Per Pack Right now, if you want to open a Tales of Middle-earth Special Edition Collector Booster yourself, itll cost you $1000
Ill be compiling all the suggestions made here by Monday morning into a list, and will consult with a few people on where they think what cards deserve to be on the pecking order
Appropriately on theme, that deck struggles with dealing with flying creatures and getting past walls and the lockdown effect of Stonehorn Dignitary