Magic: The Gathering is home to many unique species, one of the most prominent being the writhing, enigmatic Eldrazi creatures from the Blind Eternities
To win games where you don't draw Recurring Nightmare, take advantage of the number of replaceable parts available to the reanimator strategy and the many tutors in black, potentially splashing white for Enlightened Tutor
Which brings us to Shadows over Innistrad, which must follow up on that set
Basic lands are super cheap, and you probably have plenty of them already, so replacing those expensive lands with basics will work wonders in helping your budget
The Extended Art variant sells for around $5, while Surge Foils go for $8 and up
Shes worth a pretty penny from a finance standpoint if I wanted to try and trade her or sell her and she can even be viable in Standard