I think it should be required reading for any new artist to Magic well, that along with Matt Cavottas mothership article, Bens one on how signatures affect pricing, and an oldie from Aaron Forsythe himself
If you cast one, you won't have to pay an additional the first time you cast the other
The main way to go is likely the same path as a Voltron deck, namely getting those commander damage kills
Both offer some bonus graveyard utility and card quality but both also have critical issues that make them niche cards in the cube these days
Unfortunately, you have to pay mana every time you want to draw a card, but if your hand is empty or close to it, this mana cost is often worth it
That said, since this spike, the price of Barbara Wright has been falling steadily