they naturally put themselves in the graveyard and typically have some sweet effects for a Commander game
Focusing this theme on artifacts and enchantments and giving a ton of tools to support formats that care about either or both of these things gave the set a lot of tools to update existing archetypes, which is a huge improvement on stuff like Arcane, which generally didnt land or play well even with other Standard-legal sets at the time
Commander tax is an additional cost while affinity is a cost-reduction mechanic, and additional costs are applied to a spell before cost reduction
Unlike the mainly Azorius decks that characterized the blink strategy, go-wide strategies often have access to green
An enchantress package with cards like Mesa Enchantress is key here for card advantage and a solid lieutenant in the form of Yuna, Hope of Spira will ensure that any sacrificed sagas can get another go
Maybe theres a How They Brew It in my future where I make an Angel-free Shilgengar, Sire of Famine deck with effects like this, but I digress