Wizards of the Coast finally recognized the format in 2011, beginning a deluge of preconstructed decks that are playable right out of the box
On the other hand, seeing effects go from common to uncommon (like Doom Blade) is much more controversial, and while almost unheard of, having effects go from common to rare feels horrible because players end up thinking, "Only a few sets ago, I opened this card as a common, and now it's eating up the rare slot where I'm supposed to get an exciting / powerful / playable card?" This psychological feel-bad sums up the biggest problem with the aftermath cards: they simply aren't exciting because nearly all of them feel like commons that you'll open in your rare slot
It also has even or better matchups against a good portion of the metagame
The First Character Sami, Ships Engineer represents one of the main characters in the Edge of Eternities story, but is otherwise a signpost uncommon for the Boros draft archetype in the set
Its also a good 4-mana demon to offset the downside of Unholy Annex
Honorable Mention #2 (#39 Overall) - Rivaz of the Claw This 3/3 for three with menace is on curve and is legendary for Commander