Was in the Azure Dream. Activated a mirror ball. The enemy valkyrie scout got provoked by my stronghold and attacked it. That caused my valkyrie scout’s ability to trigger and get provoked by the enemy stronghold.
I let it run this way for a good five minutes before killing the game through task manager. The funny part was, the dragon scouts on both sides (the enemy one was dead at this point) had reduced both valkyrie’s to 0 attack, so they literally could not kill each other.