The X in the casting cost applies to damage and the number of creatures you target, giving you the flexibility to wipe a board however you want while leaving behind a powerful Enchantment
I like that you can play both Alisaie Leveilleur and Alphinaud Leveilleur on turn 5 so long as you cast Alisaie Leveilleur first
Having game pieces be unobtainable is bad, and if you cant afford to pick up a Wheel, dont feel bad about proxying one
In my own games, Play Boosters made drafting three colors feel smooth, thanks to plentiful fixing and dragon payoffs at every level
Textured foils are an incredible new treatment that's been years in the making, and Dominaria United features a version of the textured foiling that's totally unique to the set, and they can be found in every Collector Booster
Lorwyn and Shadowmoor each have their own cycle of full-art basic lands, letting you theme your decks to the aspect of your choice