Buyers or sellers of a particular card should do their own research to determine the relative importance of that card
They can obviously Pick Your Poison this black saga, but otherwise The Creation of Avacyn seems a simpler way to cheat your angel out than a reanimator strategy
Even within this limited pool of cards, there are a host of charming, flavorful nods to the Marvel Universe, like Doc Ock's 8/8 Power and Toughness and Pumpkin Bombs' use of Fuse counters (FYI: this is a counter we haven't seen in Magic since 2001, which is pretty cool in and of itself)
Here's the beauty of Commander, you can build this a few different ways, and you'll always want to consider combing Dargo with Phyrexian Altar for an infinite loop that needs pre-sacrificed stuff and a third card to win
One thing that makes Goblins exponentially more powerful is haste, so giving that boon plus a power and toughness boost makes this lord a top-flight option in Commander pods for any Goblin player