Id also include cards like Titanic Ultimatum or Unnatural Growth that are going to make your creatures more powerful and make it easier to deal at least some combat damage
Demonic Tutor goes way back to the game's early days, in the mid-1990s
Its not because I think that the Dark Ascension foil is suddenly going to skyrocket, but because I want to point out that even unexciting original set foils like this command a bit of a premium and have a greater degree of long-term stability
Straight to the code: View a generated set
Gray Merchant of Asphodel, Exsanguinate, Debt to the Deathless, Astarion, the Decadent, and Bloodchief Ascension can end the game in an instant if you have been draining your opponents all game long
Just because of the way that slivers were designed, it's unlikely that a Sliver deck won't seek to have every legendary sliver in it