Got 3 Emrakul, 4 Through the Breach, and 3 Sneak Attacks that I want to turn into wastelands or Metalworkers. Can any help me out?

Other priorities are Promo Living Death, foil Thrumming Stone, Marrow Knawer, Explosive Vegitation.

The rest of my Wishlist is for a cube that I want to have built by next summer, so nothing else is a priority, but will trade towards those wants as well.