These are cards that are desirable for Historic play but only go into specific archetypes and are unlikely to see play in multiple decks
She could easily find a home in a "challenge matters" deck, turning all your opponent's stuff sideways so you can get value from challenging seems pretty good
Sin Collector Three mana is probably the most reasonable cost for Duress plus a body
For cards with mutation, devotion only counts the card on top of the mutation stack
For Jund, once per turn, when you sacrifice a dork, you can get, for free, a dork with a lesser cost from your graveyard to the battlefield for free
progression offers a ton of potential damage, and finding a basic with the Secret Entrance is less likely to allow one player to bury the other in card advantage than a one-sided Howling Mine