Some collectors will only purchase and sell in niche groups and will pay an added premium to stay off the bigger platforms
You can have some artifact hate like Brotherhood's End to remove them or use activated ability stoppers like Karn, the Great Creator or Yasharn, Implacable Earth
Ashnod's Altar I hear you like combos
Winged Shepherd, Horror of the Broken Lands, Desert Cerodon, and Curator of Mysteries all have low opportunity costs, and if you are in the market for getting a creature into your graveyard to reanimate, power up delirium, exile to Scrapheap Scrounger, whatever, they are very efficient ways to do these things
If you made a deck with all Game Changers, congrats, you did it
Let Tom teach you how to be the best dark lord you can be as we review the deck and suggest new cards to add