Try discarding Be Prepared In general, you need to be careful if you are going up a Ruby/Amethyst deck with A Whole New World
For six mana, you get a Green and White 5/7 with flying and lifelink
Well, it's no Freeze in PlaceFreeze in Place, but it's going to create some alpha strikes while also sowing division amongst the table
Mill, in particular, loves to face off against control decks, which are very prevalent in Lorcana right now
This is a cool call back to the old school Juggernaut, and it can certainly enhance your board state
Ignoring the silver-borderedness of it all for a moment, Applejack's also just a fine Magic card, creating a 2/2 with upside every turn for free