I've had the same issue with Emerge from having Herigast on the field sometimes asking you to sacrifice an artifact instead of a creature, which is not how Emerge is supposed to work. It just happened to me again today, and I've attached the log file from the game where it happened.
I've had the same issue with Emerge from having Herigast on the field sometimes asking you to sacrifice an artifact instead of a creature, which is not how Emerge is supposed to work. It just happened to me again today, and I've attached the log file from the game where it happened.