You could have some incredibly scary creatures, like the Eldrazi Artisan of Kozilek (whose copy isnt cast, so you wont get to return two things) or the elemental Avenger of Zendikar
Speaking of Angels, the GW versions will be overjoyed to see some more card advantage for their builds
There wasnt much solid information in the trailer, but it did reveal a mechanic unique to this set
In Windmill Valley Duel, two rival horticulturists compete for prestige, wealth, and victory by cultivating the finest tulips, investing in powerful enhancements, and claiming the most strategic ports in this vibrant and picturesque land
There are a bunch of other worthy cards and groups of things that offer card quality that deserve some mention of why they are not on the list