I'm pretty excited about the fact that some cards will be legal in play. Getting people more familiar with un-sets is a big step towards making silver-bordered / acorn cards more generally accepted at casual tables down at the LGS. Of course, I'll always have replacements at the ready, but I feel like it would be fun to throw in some un-cards in a deck, just to add some spice on top of normal gameplay.
Saw in Half looks unironically really cool, though. Casting that on a creature you control with abilities that stack well with itself (
Avenger of Zendikar for example) I can get behind, and I hope to see more of the likes of this kind of card.
Also I really, really,
really like the "orbital space-ic lands". I'm going to have to buy at least one for each deck in that deck's colors. That
Mountain especially is absolutely stunning.
The only thing that makes me somewhat uncomfortable is the existence of collector boosters for the set. For me it kind of ruins the "Wow, they want to give us something cool and fun without ulterior motives" feeling. But I'm not going to let that put a damper on this set. It looks awesome so far, and I can't wait to see the "Galaxy Foil" treatment!