The Phyrexian Cube, everything in the cube is Phyrexian or Phyrexian adjacent (like Mishra and Tezzeret) Current list is cards I own in prints I own, Maybeboard is cards I've yet to acquire. There are probably a bunch of cards I haven't heard of that would fit the cube, I'll eventually get around to scouring all of magic and adding them to the list, but for now I just add them as I see them