Hello comrades.
I'm not completely sure if this question should fit in here or policy. I'll just toss it here and maybe uncle Scott can take it in case is not the right place.
This might seem like a corner case, and mostly it is, though part of it actually happened at a local tournament.
So lets assume we are during the end-of-round procedure and turns have been called. In one of the matches, turn 2 for example, the active player uses
Karn Liberated last ability. What happens?
What I think it would happen is that the match would end. Karn's ability ends the current game (as stated on the rules for restarting a game) but End-of-Match Procedure states that no new games may start, so the logical conclusion would be the match ends. Would this be the right approach? if not, would the restarted game resume the turn the ended game was on? This happened at a tournament.
On a related question, what would happen in the case of a
Shahrazad and turns? if you cast Shahrazad during EoR procedure, does it do anything at all? does anyone lose life? What if the turns end during the subgame? This happened at a casual commander match.
And now, for the corner case, what would happen if you cast Shahrazad, then within the subgame time is called and during turns you use Karn's last ability? Does the universe implode?