Not sure, think it's a bug but I don't have the game so I can't check the precise wording of the rules. However the interaction on one of my recent games looked odd. The game was 98665286
At one point late on, I rolled (1 sun shard)+(celestial ship) and an opponent rolled (2 moon shard)+(mirror of the abyss). As it happened, I reacted first, and replaced my celestial ship with a 4 glory point face. My opponent then selected my new 4 GP face to copy with the mirror.
I thought their choice would be limited to the die faces actually rolled - so they would have been able to choose the celestial ship, but not the 4GP face. If they are able to copy the new face, is there some turn order enforced as otherwise both players will end up waiting for the other before making their move - I would wait until the mirror is used before giving a 4GP option to an opponent, and they would wait and see what I might turn the celestial ship into before making their choice.
Linked to that, the new 4GP face did replace a face which was actually rolled. However, if I had replaced a face which wasn't rolled the animation shows the die turning so that the new face is uppermost. I haven't been able to test it however, would someone with a mirror of the abyss then be able to copy the new face even though it wasn't on a side which was rolled? The UI shows the new face uppermost as if it had been rolled.
At one point late on, I rolled (1 sun shard)+(celestial ship) and an opponent rolled (2 moon shard)+(mirror of the abyss). As it happened, I reacted first, and replaced my celestial ship with a 4 glory point face. My opponent then selected my new 4 GP face to copy with the mirror.
I thought their choice would be limited to the die faces actually rolled - so they would have been able to choose the celestial ship, but not the 4GP face. If they are able to copy the new face, is there some turn order enforced as otherwise both players will end up waiting for the other before making their move - I would wait until the mirror is used before giving a 4GP option to an opponent, and they would wait and see what I might turn the celestial ship into before making their choice.
Linked to that, the new 4GP face did replace a face which was actually rolled. However, if I had replaced a face which wasn't rolled the animation shows the die turning so that the new face is uppermost. I haven't been able to test it however, would someone with a mirror of the abyss then be able to copy the new face even though it wasn't on a side which was rolled? The UI shows the new face uppermost as if it had been rolled.