back of a mtg card Magic "White Back" Blank – Making Mythic create fourteen Treasure tokens Cardbacks - Detecting The Fakes

(It's an artifact with ", , Sacrifice this token: You gain 3 life.") Whenever you sacrifice a Food, you may pay

Ioreth of the Healing House Creating a copy of Ioreth of the Healing House with something like Irenicus's Vile Duplication creates a loop that lets you untap a third legend in the process

This is an example of a mechanical theme we just did on a handful of cards and didn't worry about every color getting a card with the callback

If these are pretty limited, highly sought cards will be selling for a premium

Sludge Monster is much harder to interact with than Auras when it comes to altering creatures, and its an excellent answer to cards like Avacyn, Angel of Hope or Sisay, Weatherlight Captain