We don't actually know yet that Rivals will have DFCss. Unlike Innistrad, where the DFC's were integral to the set design, here they mostly play towards the flavor of searching for lost treasure. In Rivals, the treasure will likely already have been found, so I could see them cutting them from the set there.
I'd love to see the enemy checks, because they haven't been printed outside of the original Innistrad block (except Isolated Chapel in the Modern Event deck), but I'm not expecting it.
Fiar enough, I hadn't considered that there might be no DFCs in Rivals. I just hate that they keep printing half cycles in standard.
Isn't rivals a large set?
No?