Each section will cover the variations of holders from each of the three major grading companies over the years
Radagast, Wizard of Wilds There are lots of playable beasts and birds, and ways to generate tokens of those beyond Radagast, Wizard of Wilds itself
The Mechanist, Aerial Artisan's activated ability doesn't remove any abilities the target artifact token has
These cards are highly coveted by collectors.
Diregraf Scavenger Diregraf Scavenger has the kind of ability that makes me want to break it, but its mana value feels a little too expensive to even try to get there
And a neat little feature: Arena packs have a duplicate-protection system that makes sure that you never open a rare or mythic that you have a full playset of until you have all the set's cards of that rarity (once you have all the rares from that set, extra rares turn into 20 gems