For a mill deck to be viable in Commander, it has to target all opponents and turn mill into damage or some other benefit, and you should aim for big/infinite combos when possible
Not only that, but this set introduces new special play cards that have instructions to help make the game even more exciting, such as pull once more card form the left player
Before this set, the tribe was confined to being a mono-white deck with Kemba, Kha Regent or Brimaz, King of Oreskos
Theres also a subsection of copy spells that recognize a particular instant and sorceryoften by exiling itand allow you to produce multiple copies of that particular spell
Whats even more amazing is that we can Blight X on an other creature, as X checks the greatest toughness among creatures we control, but were not obliged to Blight on that creature