Setup: Player A vs. Player B. Both have 3 Redeemed Souls. PLayer A plays Mayhem. Both players shuffle and draw 6. Both players draw the SoG/NJ combo and play it. As I understand current rulings, "human actions" are not an issue, so it doesn't come down to who hit the table a split-second sooner. I see three possible rulings on the outcome:
1) Both players are responding to the previously played card, so both count. Score is tied 5-5.
2) Since Player A played Mayhem, he acts first in response to his own action. Player A wins 5-3.
3) (Most complicated, but oddly satisfying.) Counting from the top of their deck, players see who drew the combo first. That player wins 5-3. (This would be almost impossible to enforce, given that there's no mechanism to force players to count their draws, but it really does seem just. Of course, if they both made it on the same card that just pushes it back a step.)
This didn't quite come up in a game (one got the combo, the other NJ), but it got me thinking. This could also apply to SoG vs. SoG or the combo vs. SoG, which could affect winners and/or LS differentials.
I lean toward solution 1, since, with human actions expunged, both are responding with the same type of play to the same game "trigger" play. Has this ever been officially ruled?