So lets say you're about to finish a dungeon and you inv 4 of your friends with the highest Magic luck.
Finish last square with everyone in party and everyone had their ML Stuff equipped
Whos ML does it fall on?
The map maker?

Magic luck doesn’t make enough of a difference to really be able to test that. It’s believed that only the drivers ML affects it though.

I would second the driver is the only one that affects it. I have long wondered if maps can over spawn but I don't complete enough high-level mazes to test it. It would be cool for a community test of what say 30ml+ results in though. I assume maps and final space chests are both affected by ml.