These were inserted into packs at a very low rate (e.g., roughly 1 in 144 packs)
I remember looking at vanilla creatures that weren't particularly good deals, required obscene amounts of colored mana, and had names that seemed like they'd been crafted by pulling scrabble letters out of a bag blindfolded and thinking this was one of the best things I'd ever seen
The first ability is a very well-designed source of card advantage, which makes him a new staple for blue-based midrange decks
Case of the Stashed Skeleton As far as 4 mana tutors go, Beseech the Mirror is often going to be better than Case of the Stashed Skeleton
White has some of the best Aura support in the game, including cards like Open the Armory and Enlightened Tutor to find the best Aura for the job and enchantress effects like Mesa Enchantress and Kor Spiritdancer to draw even more cards as you beat your opponents down with a massive commander
You can figure out if your card is Enchanted not only from the rainbow hexagon symbol, but also from the artwork as Enchanted cards offer a full art piece, taking away the border and using colours in keeping with the artwork
