Two Great Tastes are Better Apart The Ruinous Powers does an excellent job of capturing the flavor of 40ks Chaos Gods by meshing together two themes
Exert characters to quest for Lore or challenge their opponents exerted Characters
Return any number of cards with total mana value X or less from your graveyard to your hand, where X is the total of those results
So while "Don't worry, players will still be able to use all their cards" is true, it's true in the weird, rules-lawyery sense of the term where you name Borborygmos with your Pithing Needle only for your opponent to say, "Gotcha, I played Borborygmos Enraged, not Borborygmos." The community was hopeful that Historicthe non-rotating format designed to keep cards playable after rotationwould be " Arena Modern." Many actually expected it to cross over into paper play and become a post-Modern non-rotating option
Activate only as a sorcery." The number of creatures you control is determined as the activated ability resolves
Shadows over Innistrad and Eldritch Moon brought back monster typal