New rule for cooperative

[mqstout]

Involve the omen die [and all other mechanics that revolve around it, like the hero and villain triggers], and simplify it?

No Time to Think
"At the end of your turn, if you did not buy a defeat or acquire [whatever the phrasing would be] from the center row, roll the omen die. On the roll of 0 [Omen], place all cards from the center row into the [technical word for discard pile...] and replace them with new ones from the [main deck]."

I leave the question of "resolve mysteries from left to right" or "ignore mysteries" unanswered.

I don't remember seeing a rule for the center deck emptying or not. In this mode, it could be either shuffled and recycled, or it could be an alternate villains win condition.

IIRC, some cards don't go to the [discard] when used, but are removed from the game (see: that one card that gives honor), so reshuffling wouldn't be a problem there.

OR

Village Rumors
"At the end of your turn, if you did not acquire a card from the center row, and there are no minions in the center row, roll the omen die. On the roll of 0, gain a Dark Secrets."